Untrack and ignore the vendor directory

I don't think this should be in version control.

21 files changed, 0 insertions, 1928 deletions

diff --git a/vendor/golang.org/x/net/LICENSE b/vendor/golang.org/x/net/LICENSE
deleted file mode 100644
index 6a66aea..0000000
--- a/vendor/golang.org/x/net/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/net/PATENTS b/vendor/golang.org/x/net/PATENTS
deleted file mode 100644
index 7330990..0000000
--- a/vendor/golang.org/x/net/PATENTS
+++ /dev/null
@@ -1,22 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go.  This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation.  If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/net/context/context.go b/vendor/golang.org/x/net/context/context.go
deleted file mode 100644
index 56efb95..0000000
--- a/vendor/golang.org/x/net/context/context.go
+++ /dev/null
@@ -1,156 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package context defines the Context type, which carries deadlines,
-// cancelation signals, and other request-scoped values across API boundaries
-// and between processes.
-//
-// Incoming requests to a server should create a Context, and outgoing calls to
-// servers should accept a Context.  The chain of function calls between must
-// propagate the Context, optionally replacing it with a modified copy created
-// using WithDeadline, WithTimeout, WithCancel, or WithValue.
-//
-// Programs that use Contexts should follow these rules to keep interfaces
-// consistent across packages and enable static analysis tools to check context
-// propagation:
-//
-// Do not store Contexts inside a struct type; instead, pass a Context
-// explicitly to each function that needs it.  The Context should be the first
-// parameter, typically named ctx:
-//
-// 	func DoSomething(ctx context.Context, arg Arg) error {
-// 		// ... use ctx ...
-// 	}
-//
-// Do not pass a nil Context, even if a function permits it.  Pass context.TODO
-// if you are unsure about which Context to use.
-//
-// Use context Values only for request-scoped data that transits processes and
-// APIs, not for passing optional parameters to functions.
-//
-// The same Context may be passed to functions running in different goroutines;
-// Contexts are safe for simultaneous use by multiple goroutines.
-//
-// See http://blog.golang.org/context for example code for a server that uses
-// Contexts.
-package context
-
-import "time"
-
-// A Context carries a deadline, a cancelation signal, and other values across
-// API boundaries.
-//
-// Context's methods may be called by multiple goroutines simultaneously.
-type Context interface {
-	// Deadline returns the time when work done on behalf of this context
-	// should be canceled.  Deadline returns ok==false when no deadline is
-	// set.  Successive calls to Deadline return the same results.
-	Deadline() (deadline time.Time, ok bool)
-
-	// Done returns a channel that's closed when work done on behalf of this
-	// context should be canceled.  Done may return nil if this context can
-	// never be canceled.  Successive calls to Done return the same value.
-	//
-	// WithCancel arranges for Done to be closed when cancel is called;
-	// WithDeadline arranges for Done to be closed when the deadline
-	// expires; WithTimeout arranges for Done to be closed when the timeout
-	// elapses.
-	//
-	// Done is provided for use in select statements:
-	//
-	//  // Stream generates values with DoSomething and sends them to out
-	//  // until DoSomething returns an error or ctx.Done is closed.
-	//  func Stream(ctx context.Context, out <-chan Value) error {
-	//  	for {
-	//  		v, err := DoSomething(ctx)
-	//  		if err != nil {
-	//  			return err
-	//  		}
-	//  		select {
-	//  		case <-ctx.Done():
-	//  			return ctx.Err()
-	//  		case out <- v:
-	//  		}
-	//  	}
-	//  }
-	//
-	// See http://blog.golang.org/pipelines for more examples of how to use
-	// a Done channel for cancelation.
-	Done() <-chan struct{}
-
-	// Err returns a non-nil error value after Done is closed.  Err returns
-	// Canceled if the context was canceled or DeadlineExceeded if the
-	// context's deadline passed.  No other values for Err are defined.
-	// After Done is closed, successive calls to Err return the same value.
-	Err() error
-
-	// Value returns the value associated with this context for key, or nil
-	// if no value is associated with key.  Successive calls to Value with
-	// the same key returns the same result.
-	//
-	// Use context values only for request-scoped data that transits
-	// processes and API boundaries, not for passing optional parameters to
-	// functions.
-	//
-	// A key identifies a specific value in a Context.  Functions that wish
-	// to store values in Context typically allocate a key in a global
-	// variable then use that key as the argument to context.WithValue and
-	// Context.Value.  A key can be any type that supports equality;
-	// packages should define keys as an unexported type to avoid
-	// collisions.
-	//
-	// Packages that define a Context key should provide type-safe accessors
-	// for the values stores using that key:
-	//
-	// 	// Package user defines a User type that's stored in Contexts.
-	// 	package user
-	//
-	// 	import "golang.org/x/net/context"
-	//
-	// 	// User is the type of value stored in the Contexts.
-	// 	type User struct {...}
-	//
-	// 	// key is an unexported type for keys defined in this package.
-	// 	// This prevents collisions with keys defined in other packages.
-	// 	type key int
-	//
-	// 	// userKey is the key for user.User values in Contexts.  It is
-	// 	// unexported; clients use user.NewContext and user.FromContext
-	// 	// instead of using this key directly.
-	// 	var userKey key = 0
-	//
-	// 	// NewContext returns a new Context that carries value u.
-	// 	func NewContext(ctx context.Context, u *User) context.Context {
-	// 		return context.WithValue(ctx, userKey, u)
-	// 	}
-	//
-	// 	// FromContext returns the User value stored in ctx, if any.
-	// 	func FromContext(ctx context.Context) (*User, bool) {
-	// 		u, ok := ctx.Value(userKey).(*User)
-	// 		return u, ok
-	// 	}
-	Value(key interface{}) interface{}
-}
-
-// Background returns a non-nil, empty Context. It is never canceled, has no
-// values, and has no deadline.  It is typically used by the main function,
-// initialization, and tests, and as the top-level Context for incoming
-// requests.
-func Background() Context {
-	return background
-}
-
-// TODO returns a non-nil, empty Context.  Code should use context.TODO when
-// it's unclear which Context to use or it is not yet available (because the
-// surrounding function has not yet been extended to accept a Context
-// parameter).  TODO is recognized by static analysis tools that determine
-// whether Contexts are propagated correctly in a program.
-func TODO() Context {
-	return todo
-}
-
-// A CancelFunc tells an operation to abandon its work.
-// A CancelFunc does not wait for the work to stop.
-// After the first call, subsequent calls to a CancelFunc do nothing.
-type CancelFunc func()
diff --git a/vendor/golang.org/x/net/context/ctxhttp/cancelreq.go b/vendor/golang.org/x/net/context/ctxhttp/cancelreq.go
deleted file mode 100644
index e3170e3..0000000
--- a/vendor/golang.org/x/net/context/ctxhttp/cancelreq.go
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.5
-
-package ctxhttp
-
-import "net/http"
-
-func canceler(client *http.Client, req *http.Request) func() {
-	// TODO(djd): Respect any existing value of req.Cancel.
-	ch := make(chan struct{})
-	req.Cancel = ch
-
-	return func() {
-		close(ch)
-	}
-}
diff --git a/vendor/golang.org/x/net/context/ctxhttp/cancelreq_go14.go b/vendor/golang.org/x/net/context/ctxhttp/cancelreq_go14.go
deleted file mode 100644
index 56bcbad..0000000
--- a/vendor/golang.org/x/net/context/ctxhttp/cancelreq_go14.go
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !go1.5
-
-package ctxhttp
-
-import "net/http"
-
-type requestCanceler interface {
-	CancelRequest(*http.Request)
-}
-
-func canceler(client *http.Client, req *http.Request) func() {
-	rc, ok := client.Transport.(requestCanceler)
-	if !ok {
-		return func() {}
-	}
-	return func() {
-		rc.CancelRequest(req)
-	}
-}
diff --git a/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go b/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go
deleted file mode 100644
index e35860a..0000000
--- a/vendor/golang.org/x/net/context/ctxhttp/ctxhttp.go
+++ /dev/null
@@ -1,145 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package ctxhttp provides helper functions for performing context-aware HTTP requests.
-package ctxhttp
-
-import (
-	"io"
-	"net/http"
-	"net/url"
-	"strings"
-
-	"golang.org/x/net/context"
-)
-
-func nop() {}
-
-var (
-	testHookContextDoneBeforeHeaders = nop
-	testHookDoReturned               = nop
-	testHookDidBodyClose             = nop
-)
-
-// Do sends an HTTP request with the provided http.Client and returns an HTTP response.
-// If the client is nil, http.DefaultClient is used.
-// If the context is canceled or times out, ctx.Err() will be returned.
-func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
-	if client == nil {
-		client = http.DefaultClient
-	}
-
-	// Request cancelation changed in Go 1.5, see cancelreq.go and cancelreq_go14.go.
-	cancel := canceler(client, req)
-
-	type responseAndError struct {
-		resp *http.Response
-		err  error
-	}
-	result := make(chan responseAndError, 1)
-
-	// Make local copies of test hooks closed over by goroutines below.
-	// Prevents data races in tests.
-	testHookDoReturned := testHookDoReturned
-	testHookDidBodyClose := testHookDidBodyClose
-
-	go func() {
-		resp, err := client.Do(req)
-		testHookDoReturned()
-		result <- responseAndError{resp, err}
-	}()
-
-	var resp *http.Response
-
-	select {
-	case <-ctx.Done():
-		testHookContextDoneBeforeHeaders()
-		cancel()
-		// Clean up after the goroutine calling client.Do:
-		go func() {
-			if r := <-result; r.resp != nil {
-				testHookDidBodyClose()
-				r.resp.Body.Close()
-			}
-		}()
-		return nil, ctx.Err()
-	case r := <-result:
-		var err error
-		resp, err = r.resp, r.err
-		if err != nil {
-			return resp, err
-		}
-	}
-
-	c := make(chan struct{})
-	go func() {
-		select {
-		case <-ctx.Done():
-			cancel()
-		case <-c:
-			// The response's Body is closed.
-		}
-	}()
-	resp.Body = &notifyingReader{resp.Body, c}
-
-	return resp, nil
-}
-
-// Get issues a GET request via the Do function.
-func Get(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
-	req, err := http.NewRequest("GET", url, nil)
-	if err != nil {
-		return nil, err
-	}
-	return Do(ctx, client, req)
-}
-
-// Head issues a HEAD request via the Do function.
-func Head(ctx context.Context, client *http.Client, url string) (*http.Response, error) {
-	req, err := http.NewRequest("HEAD", url, nil)
-	if err != nil {
-		return nil, err
-	}
-	return Do(ctx, client, req)
-}
-
-// Post issues a POST request via the Do function.
-func Post(ctx context.Context, client *http.Client, url string, bodyType string, body io.Reader) (*http.Response, error) {
-	req, err := http.NewRequest("POST", url, body)
-	if err != nil {
-		return nil, err
-	}
-	req.Header.Set("Content-Type", bodyType)
-	return Do(ctx, client, req)
-}
-
-// PostForm issues a POST request via the Do function.
-func PostForm(ctx context.Context, client *http.Client, url string, data url.Values) (*http.Response, error) {
-	return Post(ctx, client, url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
-}
-
-// notifyingReader is an io.ReadCloser that closes the notify channel after
-// Close is called or a Read fails on the underlying ReadCloser.
-type notifyingReader struct {
-	io.ReadCloser
-	notify chan<- struct{}
-}
-
-func (r *notifyingReader) Read(p []byte) (int, error) {
-	n, err := r.ReadCloser.Read(p)
-	if err != nil && r.notify != nil {
-		close(r.notify)
-		r.notify = nil
-	}
-	return n, err
-}
-
-func (r *notifyingReader) Close() error {
-	err := r.ReadCloser.Close()
-	if r.notify != nil {
-		close(r.notify)
-		r.notify = nil
-	}
-	return err
-}
diff --git a/vendor/golang.org/x/net/context/go17.go b/vendor/golang.org/x/net/context/go17.go
deleted file mode 100644
index f8cda19..0000000
--- a/vendor/golang.org/x/net/context/go17.go
+++ /dev/null
@@ -1,72 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.7
-
-package context
-
-import (
-	"context" // standard library's context, as of Go 1.7
-	"time"
-)
-
-var (
-	todo       = context.TODO()
-	background = context.Background()
-)
-
-// Canceled is the error returned by Context.Err when the context is canceled.
-var Canceled = context.Canceled
-
-// DeadlineExceeded is the error returned by Context.Err when the context's
-// deadline passes.
-var DeadlineExceeded = context.DeadlineExceeded
-
-// WithCancel returns a copy of parent with a new Done channel. The returned
-// context's Done channel is closed when the returned cancel function is called
-// or when the parent context's Done channel is closed, whichever happens first.
-//
-// Canceling this context releases resources associated with it, so code should
-// call cancel as soon as the operations running in this Context complete.
-func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
-	ctx, f := context.WithCancel(parent)
-	return ctx, CancelFunc(f)
-}
-
-// WithDeadline returns a copy of the parent context with the deadline adjusted
-// to be no later than d.  If the parent's deadline is already earlier than d,
-// WithDeadline(parent, d) is semantically equivalent to parent.  The returned
-// context's Done channel is closed when the deadline expires, when the returned
-// cancel function is called, or when the parent context's Done channel is
-// closed, whichever happens first.
-//
-// Canceling this context releases resources associated with it, so code should
-// call cancel as soon as the operations running in this Context complete.
-func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
-	ctx, f := context.WithDeadline(parent, deadline)
-	return ctx, CancelFunc(f)
-}
-
-// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
-//
-// Canceling this context releases resources associated with it, so code should
-// call cancel as soon as the operations running in this Context complete:
-//
-// 	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
-// 		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
-// 		defer cancel()  // releases resources if slowOperation completes before timeout elapses
-// 		return slowOperation(ctx)
-// 	}
-func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
-	return WithDeadline(parent, time.Now().Add(timeout))
-}
-
-// WithValue returns a copy of parent in which the value associated with key is
-// val.
-//
-// Use context Values only for request-scoped data that transits processes and
-// APIs, not for passing optional parameters to functions.
-func WithValue(parent Context, key interface{}, val interface{}) Context {
-	return context.WithValue(parent, key, val)
-}
diff --git a/vendor/golang.org/x/net/context/pre_go17.go b/vendor/golang.org/x/net/context/pre_go17.go
deleted file mode 100644
index 5a30aca..0000000
--- a/vendor/golang.org/x/net/context/pre_go17.go
+++ /dev/null
@@ -1,300 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !go1.7
-
-package context
-
-import (
-	"errors"
-	"fmt"
-	"sync"
-	"time"
-)
-
-// An emptyCtx is never canceled, has no values, and has no deadline.  It is not
-// struct{}, since vars of this type must have distinct addresses.
-type emptyCtx int
-
-func (*emptyCtx) Deadline() (deadline time.Time, ok bool) {
-	return
-}
-
-func (*emptyCtx) Done() <-chan struct{} {
-	return nil
-}
-
-func (*emptyCtx) Err() error {
-	return nil
-}
-
-func (*emptyCtx) Value(key interface{}) interface{} {
-	return nil
-}
-
-func (e *emptyCtx) String() string {
-	switch e {
-	case background:
-		return "context.Background"
-	case todo:
-		return "context.TODO"
-	}
-	return "unknown empty Context"
-}
-
-var (
-	background = new(emptyCtx)
-	todo       = new(emptyCtx)
-)
-
-// Canceled is the error returned by Context.Err when the context is canceled.
-var Canceled = errors.New("context canceled")
-
-// DeadlineExceeded is the error returned by Context.Err when the context's
-// deadline passes.
-var DeadlineExceeded = errors.New("context deadline exceeded")
-
-// WithCancel returns a copy of parent with a new Done channel. The returned
-// context's Done channel is closed when the returned cancel function is called
-// or when the parent context's Done channel is closed, whichever happens first.
-//
-// Canceling this context releases resources associated with it, so code should
-// call cancel as soon as the operations running in this Context complete.
-func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
-	c := newCancelCtx(parent)
-	propagateCancel(parent, c)
-	return c, func() { c.cancel(true, Canceled) }
-}
-
-// newCancelCtx returns an initialized cancelCtx.
-func newCancelCtx(parent Context) *cancelCtx {
-	return &cancelCtx{
-		Context: parent,
-		done:    make(chan struct{}),
-	}
-}
-
-// propagateCancel arranges for child to be canceled when parent is.
-func propagateCancel(parent Context, child canceler) {
-	if parent.Done() == nil {
-		return // parent is never canceled
-	}
-	if p, ok := parentCancelCtx(parent); ok {
-		p.mu.Lock()
-		if p.err != nil {
-			// parent has already been canceled
-			child.cancel(false, p.err)
-		} else {
-			if p.children == nil {
-				p.children = make(map[canceler]bool)
-			}
-			p.children[child] = true
-		}
-		p.mu.Unlock()
-	} else {
-		go func() {
-			select {
-			case <-parent.Done():
-				child.cancel(false, parent.Err())
-			case <-child.Done():
-			}
-		}()
-	}
-}
-
-// parentCancelCtx follows a chain of parent references until it finds a
-// *cancelCtx.  This function understands how each of the concrete types in this
-// package represents its parent.
-func parentCancelCtx(parent Context) (*cancelCtx, bool) {
-	for {
-		switch c := parent.(type) {
-		case *cancelCtx:
-			return c, true
-		case *timerCtx:
-			return c.cancelCtx, true
-		case *valueCtx:
-			parent = c.Context
-		default:
-			return nil, false
-		}
-	}
-}
-
-// removeChild removes a context from its parent.
-func removeChild(parent Context, child canceler) {
-	p, ok := parentCancelCtx(parent)
-	if !ok {
-		return
-	}
-	p.mu.Lock()
-	if p.children != nil {
-		delete(p.children, child)
-	}
-	p.mu.Unlock()
-}
-
-// A canceler is a context type that can be canceled directly.  The
-// implementations are *cancelCtx and *timerCtx.
-type canceler interface {
-	cancel(removeFromParent bool, err error)
-	Done() <-chan struct{}
-}
-
-// A cancelCtx can be canceled.  When canceled, it also cancels any children
-// that implement canceler.
-type cancelCtx struct {
-	Context
-
-	done chan struct{} // closed by the first cancel call.
-
-	mu       sync.Mutex
-	children map[canceler]bool // set to nil by the first cancel call
-	err      error             // set to non-nil by the first cancel call
-}
-
-func (c *cancelCtx) Done() <-chan struct{} {
-	return c.done
-}
-
-func (c *cancelCtx) Err() error {
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	return c.err
-}
-
-func (c *cancelCtx) String() string {
-	return fmt.Sprintf("%v.WithCancel", c.Context)
-}
-
-// cancel closes c.done, cancels each of c's children, and, if
-// removeFromParent is true, removes c from its parent's children.
-func (c *cancelCtx) cancel(removeFromParent bool, err error) {
-	if err == nil {
-		panic("context: internal error: missing cancel error")
-	}
-	c.mu.Lock()
-	if c.err != nil {
-		c.mu.Unlock()
-		return // already canceled
-	}
-	c.err = err
-	close(c.done)
-	for child := range c.children {
-		// NOTE: acquiring the child's lock while holding parent's lock.
-		child.cancel(false, err)
-	}
-	c.children = nil
-	c.mu.Unlock()
-
-	if removeFromParent {
-		removeChild(c.Context, c)
-	}
-}
-
-// WithDeadline returns a copy of the parent context with the deadline adjusted
-// to be no later than d.  If the parent's deadline is already earlier than d,
-// WithDeadline(parent, d) is semantically equivalent to parent.  The returned
-// context's Done channel is closed when the deadline expires, when the returned
-// cancel function is called, or when the parent context's Done channel is
-// closed, whichever happens first.
-//
-// Canceling this context releases resources associated with it, so code should
-// call cancel as soon as the operations running in this Context complete.
-func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
-	if cur, ok := parent.Deadline(); ok && cur.Before(deadline) {
-		// The current deadline is already sooner than the new one.
-		return WithCancel(parent)
-	}
-	c := &timerCtx{
-		cancelCtx: newCancelCtx(parent),
-		deadline:  deadline,
-	}
-	propagateCancel(parent, c)
-	d := deadline.Sub(time.Now())
-	if d <= 0 {
-		c.cancel(true, DeadlineExceeded) // deadline has already passed
-		return c, func() { c.cancel(true, Canceled) }
-	}
-	c.mu.Lock()
-	defer c.mu.Unlock()
-	if c.err == nil {
-		c.timer = time.AfterFunc(d, func() {
-			c.cancel(true, DeadlineExceeded)
-		})
-	}
-	return c, func() { c.cancel(true, Canceled) }
-}
-
-// A timerCtx carries a timer and a deadline.  It embeds a cancelCtx to
-// implement Done and Err.  It implements cancel by stopping its timer then
-// delegating to cancelCtx.cancel.
-type timerCtx struct {
-	*cancelCtx
-	timer *time.Timer // Under cancelCtx.mu.
-
-	deadline time.Time
-}
-
-func (c *timerCtx) Deadline() (deadline time.Time, ok bool) {
-	return c.deadline, true
-}
-
-func (c *timerCtx) String() string {
-	return fmt.Sprintf("%v.WithDeadline(%s [%s])", c.cancelCtx.Context, c.deadline, c.deadline.Sub(time.Now()))
-}
-
-func (c *timerCtx) cancel(removeFromParent bool, err error) {
-	c.cancelCtx.cancel(false, err)
-	if removeFromParent {
-		// Remove this timerCtx from its parent cancelCtx's children.
-		removeChild(c.cancelCtx.Context, c)
-	}
-	c.mu.Lock()
-	if c.timer != nil {
-		c.timer.Stop()
-		c.timer = nil
-	}
-	c.mu.Unlock()
-}
-
-// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
-//
-// Canceling this context releases resources associated with it, so code should
-// call cancel as soon as the operations running in this Context complete:
-//
-// 	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
-// 		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
-// 		defer cancel()  // releases resources if slowOperation completes before timeout elapses
-// 		return slowOperation(ctx)
-// 	}
-func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
-	return WithDeadline(parent, time.Now().Add(timeout))
-}
-
-// WithValue returns a copy of parent in which the value associated with key is
-// val.
-//
-// Use context Values only for request-scoped data that transits processes and
-// APIs, not for passing optional parameters to functions.
-func WithValue(parent Context, key interface{}, val interface{}) Context {
-	return &valueCtx{parent, key, val}
-}
-
-// A valueCtx carries a key-value pair.  It implements Value for that key and
-// delegates all other calls to the embedded Context.
-type valueCtx struct {
-	Context
-	key, val interface{}
-}
-
-func (c *valueCtx) String() string {
-	return fmt.Sprintf("%v.WithValue(%#v, %#v)", c.Context, c.key, c.val)
-}
-
-func (c *valueCtx) Value(key interface{}) interface{} {
-	if c.key == key {
-		return c.val
-	}
-	return c.Context.Value(key)
-}
diff --git a/vendor/golang.org/x/oauth2/.travis.yml b/vendor/golang.org/x/oauth2/.travis.yml
deleted file mode 100644
index a035125..0000000
--- a/vendor/golang.org/x/oauth2/.travis.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-language: go
-
-go:
-  - 1.3
-  - 1.4
-
-install:
-  - export GOPATH="$HOME/gopath"
-  - mkdir -p "$GOPATH/src/golang.org/x"
-  - mv "$TRAVIS_BUILD_DIR" "$GOPATH/src/golang.org/x/oauth2"
-  - go get -v -t -d golang.org/x/oauth2/...
-
-script:
-  - go test -v golang.org/x/oauth2/...
diff --git a/vendor/golang.org/x/oauth2/AUTHORS b/vendor/golang.org/x/oauth2/AUTHORS
deleted file mode 100644
index 15167cd..0000000
--- a/vendor/golang.org/x/oauth2/AUTHORS
+++ /dev/null
@@ -1,3 +0,0 @@
-# This source code refers to The Go Authors for copyright purposes.
-# The master list of authors is in the main Go distribution,
-# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/oauth2/CONTRIBUTING.md b/vendor/golang.org/x/oauth2/CONTRIBUTING.md
deleted file mode 100644
index 46aa2b1..0000000
--- a/vendor/golang.org/x/oauth2/CONTRIBUTING.md
+++ /dev/null
@@ -1,31 +0,0 @@
-# Contributing to Go
-
-Go is an open source project.
-
-It is the work of hundreds of contributors. We appreciate your help!
-
-
-## Filing issues
-
-When [filing an issue](https://github.com/golang/oauth2/issues), make sure to answer these five questions:
-
-1. What version of Go are you using (`go version`)?
-2. What operating system and processor architecture are you using?
-3. What did you do?
-4. What did you expect to see?
-5. What did you see instead?
-
-General questions should go to the [golang-nuts mailing list](https://groups.google.com/group/golang-nuts) instead of the issue tracker.
-The gophers there will answer or ask you to file an issue if you've tripped over a bug.
-
-## Contributing code
-
-Please read the [Contribution Guidelines](https://golang.org/doc/contribute.html)
-before sending patches.
-
-**We do not accept GitHub pull requests**
-(we use [Gerrit](https://code.google.com/p/gerrit/) instead for code review).
-
-Unless otherwise noted, the Go source files are distributed under
-the BSD-style license found in the LICENSE file.
-
diff --git a/vendor/golang.org/x/oauth2/CONTRIBUTORS b/vendor/golang.org/x/oauth2/CONTRIBUTORS
deleted file mode 100644
index 1c4577e..0000000
--- a/vendor/golang.org/x/oauth2/CONTRIBUTORS
+++ /dev/null
@@ -1,3 +0,0 @@
-# This source code was written by the Go contributors.
-# The master list of contributors is in the main Go distribution,
-# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/oauth2/LICENSE b/vendor/golang.org/x/oauth2/LICENSE
deleted file mode 100644
index d02f24f..0000000
--- a/vendor/golang.org/x/oauth2/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-Copyright (c) 2009 The oauth2 Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/oauth2/README.md b/vendor/golang.org/x/oauth2/README.md
deleted file mode 100644
index 0d51417..0000000
--- a/vendor/golang.org/x/oauth2/README.md
+++ /dev/null
@@ -1,64 +0,0 @@
-# OAuth2 for Go
-
-[![Build Status](https://travis-ci.org/golang/oauth2.svg?branch=master)](https://travis-ci.org/golang/oauth2)
-
-oauth2 package contains a client implementation for OAuth 2.0 spec.
-
-## Installation
-
-~~~~
-go get golang.org/x/oauth2
-~~~~
-
-See godoc for further documentation and examples.
-
-* [godoc.org/golang.org/x/oauth2](http://godoc.org/golang.org/x/oauth2)
-* [godoc.org/golang.org/x/oauth2/google](http://godoc.org/golang.org/x/oauth2/google)
-
-
-## App Engine
-
-In change 96e89be (March 2015) we removed the `oauth2.Context2` type in favor
-of the [`context.Context`](https://golang.org/x/net/context#Context) type from
-the `golang.org/x/net/context` package
-
-This means its no longer possible to use the "Classic App Engine"
-`appengine.Context` type with the `oauth2` package. (You're using
-Classic App Engine if you import the package `"appengine"`.)
-
-To work around this, you may use the new `"google.golang.org/appengine"`
-package. This package has almost the same API as the `"appengine"` package,
-but it can be fetched with `go get` and used on "Managed VMs" and well as
-Classic App Engine.
-
-See the [new `appengine` package's readme](https://github.com/golang/appengine#updating-a-go-app-engine-app)
-for information on updating your app.
-
-If you don't want to update your entire app to use the new App Engine packages,
-you may use both sets of packages in parallel, using only the new packages
-with the `oauth2` package.
-
-	import (
-		"golang.org/x/net/context"
-		"golang.org/x/oauth2"
-		"golang.org/x/oauth2/google"
-		newappengine "google.golang.org/appengine"
-		newurlfetch "google.golang.org/appengine/urlfetch"
-
-		"appengine"
-	)
-
-	func handler(w http.ResponseWriter, r *http.Request) {
-		var c appengine.Context = appengine.NewContext(r)
-		c.Infof("Logging a message with the old package")
-
-		var ctx context.Context = newappengine.NewContext(r)
-		client := &http.Client{
-			Transport: &oauth2.Transport{
-				Source: google.AppEngineTokenSource(ctx, "scope"),
-				Base:   &newurlfetch.Transport{Context: ctx},
-			},
-		}
-		client.Get("...")
-	}
-
diff --git a/vendor/golang.org/x/oauth2/client_appengine.go b/vendor/golang.org/x/oauth2/client_appengine.go
deleted file mode 100644
index 8962c49..0000000
--- a/vendor/golang.org/x/oauth2/client_appengine.go
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build appengine
-
-// App Engine hooks.
-
-package oauth2
-
-import (
-	"net/http"
-
-	"golang.org/x/net/context"
-	"golang.org/x/oauth2/internal"
-	"google.golang.org/appengine/urlfetch"
-)
-
-func init() {
-	internal.RegisterContextClientFunc(contextClientAppEngine)
-}
-
-func contextClientAppEngine(ctx context.Context) (*http.Client, error) {
-	return urlfetch.Client(ctx), nil
-}
diff --git a/vendor/golang.org/x/oauth2/internal/oauth2.go b/vendor/golang.org/x/oauth2/internal/oauth2.go
deleted file mode 100644
index fbe1028..0000000
--- a/vendor/golang.org/x/oauth2/internal/oauth2.go
+++ /dev/null
@@ -1,76 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package internal contains support packages for oauth2 package.
-package internal
-
-import (
-	"bufio"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"io"
-	"strings"
-)
-
-// ParseKey converts the binary contents of a private key file
-// to an *rsa.PrivateKey. It detects whether the private key is in a
-// PEM container or not. If so, it extracts the the private key
-// from PEM container before conversion. It only supports PEM
-// containers with no passphrase.
-func ParseKey(key []byte) (*rsa.PrivateKey, error) {
-	block, _ := pem.Decode(key)
-	if block != nil {
-		key = block.Bytes
-	}
-	parsedKey, err := x509.ParsePKCS8PrivateKey(key)
-	if err != nil {
-		parsedKey, err = x509.ParsePKCS1PrivateKey(key)
-		if err != nil {
-			return nil, fmt.Errorf("private key should be a PEM or plain PKSC1 or PKCS8; parse error: %v", err)
-		}
-	}
-	parsed, ok := parsedKey.(*rsa.PrivateKey)
-	if !ok {
-		return nil, errors.New("private key is invalid")
-	}
-	return parsed, nil
-}
-
-func ParseINI(ini io.Reader) (map[string]map[string]string, error) {
-	result := map[string]map[string]string{
-		"": map[string]string{}, // root section
-	}
-	scanner := bufio.NewScanner(ini)
-	currentSection := ""
-	for scanner.Scan() {
-		line := strings.TrimSpace(scanner.Text())
-		if strings.HasPrefix(line, ";") {
-			// comment.
-			continue
-		}
-		if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
-			currentSection = strings.TrimSpace(line[1 : len(line)-1])
-			result[currentSection] = map[string]string{}
-			continue
-		}
-		parts := strings.SplitN(line, "=", 2)
-		if len(parts) == 2 && parts[0] != "" {
-			result[currentSection][strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
-		}
-	}
-	if err := scanner.Err(); err != nil {
-		return nil, fmt.Errorf("error scanning ini: %v", err)
-	}
-	return result, nil
-}
-
-func CondVal(v string) []string {
-	if v == "" {
-		return nil
-	}
-	return []string{v}
-}
diff --git a/vendor/golang.org/x/oauth2/internal/token.go b/vendor/golang.org/x/oauth2/internal/token.go
deleted file mode 100644
index a6ed3cc..0000000
--- a/vendor/golang.org/x/oauth2/internal/token.go
+++ /dev/null
@@ -1,225 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package internal contains support packages for oauth2 package.
-package internal
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"mime"
-	"net/http"
-	"net/url"
-	"strconv"
-	"strings"
-	"time"
-
-	"golang.org/x/net/context"
-)
-
-// Token represents the crendentials used to authorize
-// the requests to access protected resources on the OAuth 2.0
-// provider's backend.
-//
-// This type is a mirror of oauth2.Token and exists to break
-// an otherwise-circular dependency. Other internal packages
-// should convert this Token into an oauth2.Token before use.
-type Token struct {
-	// AccessToken is the token that authorizes and authenticates
-	// the requests.
-	AccessToken string
-
-	// TokenType is the type of token.
-	// The Type method returns either this or "Bearer", the default.
-	TokenType string
-
-	// RefreshToken is a token that's used by the application
-	// (as opposed to the user) to refresh the access token
-	// if it expires.
-	RefreshToken string
-
-	// Expiry is the optional expiration time of the access token.
-	//
-	// If zero, TokenSource implementations will reuse the same
-	// token forever and RefreshToken or equivalent
-	// mechanisms for that TokenSource will not be used.
-	Expiry time.Time
-
-	// Raw optionally contains extra metadata from the server
-	// when updating a token.
-	Raw interface{}
-}
-
-// tokenJSON is the struct representing the HTTP response from OAuth2
-// providers returning a token in JSON form.
-type tokenJSON struct {
-	AccessToken  string         `json:"access_token"`
-	TokenType    string         `json:"token_type"`
-	RefreshToken string         `json:"refresh_token"`
-	ExpiresIn    expirationTime `json:"expires_in"` // at least PayPal returns string, while most return number
-	Expires      expirationTime `json:"expires"`    // broken Facebook spelling of expires_in
-}
-
-func (e *tokenJSON) expiry() (t time.Time) {
-	if v := e.ExpiresIn; v != 0 {
-		return time.Now().Add(time.Duration(v) * time.Second)
-	}
-	if v := e.Expires; v != 0 {
-		return time.Now().Add(time.Duration(v) * time.Second)
-	}
-	return
-}
-
-type expirationTime int32
-
-func (e *expirationTime) UnmarshalJSON(b []byte) error {
-	var n json.Number
-	err := json.Unmarshal(b, &n)
-	if err != nil {
-		return err
-	}
-	i, err := n.Int64()
-	if err != nil {
-		return err
-	}
-	*e = expirationTime(i)
-	return nil
-}
-
-var brokenAuthHeaderProviders = []string{
-	"https://accounts.google.com/",
-	"https://api.dropbox.com/",
-	"https://api.dropboxapi.com/",
-	"https://api.instagram.com/",
-	"https://api.netatmo.net/",
-	"https://api.odnoklassniki.ru/",
-	"https://api.pushbullet.com/",
-	"https://api.soundcloud.com/",
-	"https://api.twitch.tv/",
-	"https://app.box.com/",
-	"https://connect.stripe.com/",
-	"https://login.microsoftonline.com/",
-	"https://login.salesforce.com/",
-	"https://oauth.sandbox.trainingpeaks.com/",
-	"https://oauth.trainingpeaks.com/",
-	"https://oauth.vk.com/",
-	"https://openapi.baidu.com/",
-	"https://slack.com/",
-	"https://test-sandbox.auth.corp.google.com",
-	"https://test.salesforce.com/",
-	"https://user.gini.net/",
-	"https://www.douban.com/",
-	"https://www.googleapis.com/",
-	"https://www.linkedin.com/",
-	"https://www.strava.com/oauth/",
-	"https://www.wunderlist.com/oauth/",
-	"https://api.patreon.com/",
-}
-
-func RegisterBrokenAuthHeaderProvider(tokenURL string) {
-	brokenAuthHeaderProviders = append(brokenAuthHeaderProviders, tokenURL)
-}
-
-// providerAuthHeaderWorks reports whether the OAuth2 server identified by the tokenURL
-// implements the OAuth2 spec correctly
-// See https://code.google.com/p/goauth2/issues/detail?id=31 for background.
-// In summary:
-// - Reddit only accepts client secret in the Authorization header
-// - Dropbox accepts either it in URL param or Auth header, but not both.
-// - Google only accepts URL param (not spec compliant?), not Auth header
-// - Stripe only accepts client secret in Auth header with Bearer method, not Basic
-func providerAuthHeaderWorks(tokenURL string) bool {
-	for _, s := range brokenAuthHeaderProviders {
-		if strings.HasPrefix(tokenURL, s) {
-			// Some sites fail to implement the OAuth2 spec fully.
-			return false
-		}
-	}
-
-	// Assume the provider implements the spec properly
-	// otherwise. We can add more exceptions as they're
-	// discovered. We will _not_ be adding configurable hooks
-	// to this package to let users select server bugs.
-	return true
-}
-
-func RetrieveToken(ctx context.Context, ClientID, ClientSecret, TokenURL string, v url.Values) (*Token, error) {
-	hc, err := ContextClient(ctx)
-	if err != nil {
-		return nil, err
-	}
-	v.Set("client_id", ClientID)
-	bustedAuth := !providerAuthHeaderWorks(TokenURL)
-	if bustedAuth && ClientSecret != "" {
-		v.Set("client_secret", ClientSecret)
-	}
-	req, err := http.NewRequest("POST", TokenURL, strings.NewReader(v.Encode()))
-	if err != nil {
-		return nil, err
-	}
-	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
-	if !bustedAuth {
-		req.SetBasicAuth(ClientID, ClientSecret)
-	}
-	r, err := hc.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	defer r.Body.Close()
-	body, err := ioutil.ReadAll(io.LimitReader(r.Body, 1<<20))
-	if err != nil {
-		return nil, fmt.Errorf("oauth2: cannot fetch token: %v", err)
-	}
-	if code := r.StatusCode; code < 200 || code > 299 {
-		return nil, fmt.Errorf("oauth2: cannot fetch token: %v\nResponse: %s", r.Status, body)
-	}
-
-	var token *Token
-	content, _, _ := mime.ParseMediaType(r.Header.Get("Content-Type"))
-	switch content {
-	case "application/x-www-form-urlencoded", "text/plain":
-		vals, err := url.ParseQuery(string(body))
-		if err != nil {
-			return nil, err
-		}
-		token = &Token{
-			AccessToken:  vals.Get("access_token"),
-			TokenType:    vals.Get("token_type"),
-			RefreshToken: vals.Get("refresh_token"),
-			Raw:          vals,
-		}
-		e := vals.Get("expires_in")
-		if e == "" {
-			// TODO(jbd): Facebook's OAuth2 implementation is broken and
-			// returns expires_in field in expires. Remove the fallback to expires,
-			// when Facebook fixes their implementation.
-			e = vals.Get("expires")
-		}
-		expires, _ := strconv.Atoi(e)
-		if expires != 0 {
-			token.Expiry = time.Now().Add(time.Duration(expires) * time.Second)
-		}
-	default:
-		var tj tokenJSON
-		if err = json.Unmarshal(body, &tj); err != nil {
-			return nil, err
-		}
-		token = &Token{
-			AccessToken:  tj.AccessToken,
-			TokenType:    tj.TokenType,
-			RefreshToken: tj.RefreshToken,
-			Expiry:       tj.expiry(),
-			Raw:          make(map[string]interface{}),
-		}
-		json.Unmarshal(body, &token.Raw) // no error checks for optional fields
-	}
-	// Don't overwrite `RefreshToken` with an empty value
-	// if this was a token refreshing request.
-	if token.RefreshToken == "" {
-		token.RefreshToken = v.Get("refresh_token")
-	}
-	return token, nil
-}
diff --git a/vendor/golang.org/x/oauth2/internal/transport.go b/vendor/golang.org/x/oauth2/internal/transport.go
deleted file mode 100644
index f1f173e..0000000
--- a/vendor/golang.org/x/oauth2/internal/transport.go
+++ /dev/null
@@ -1,69 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package internal contains support packages for oauth2 package.
-package internal
-
-import (
-	"net/http"
-
-	"golang.org/x/net/context"
-)
-
-// HTTPClient is the context key to use with golang.org/x/net/context's
-// WithValue function to associate an *http.Client value with a context.
-var HTTPClient ContextKey
-
-// ContextKey is just an empty struct. It exists so HTTPClient can be
-// an immutable public variable with a unique type. It's immutable
-// because nobody else can create a ContextKey, being unexported.
-type ContextKey struct{}
-
-// ContextClientFunc is a func which tries to return an *http.Client
-// given a Context value. If it returns an error, the search stops
-// with that error.  If it returns (nil, nil), the search continues
-// down the list of registered funcs.
-type ContextClientFunc func(context.Context) (*http.Client, error)
-
-var contextClientFuncs []ContextClientFunc
-
-func RegisterContextClientFunc(fn ContextClientFunc) {
-	contextClientFuncs = append(contextClientFuncs, fn)
-}
-
-func ContextClient(ctx context.Context) (*http.Client, error) {
-	if ctx != nil {
-		if hc, ok := ctx.Value(HTTPClient).(*http.Client); ok {
-			return hc, nil
-		}
-	}
-	for _, fn := range contextClientFuncs {
-		c, err := fn(ctx)
-		if err != nil {
-			return nil, err
-		}
-		if c != nil {
-			return c, nil
-		}
-	}
-	return http.DefaultClient, nil
-}
-
-func ContextTransport(ctx context.Context) http.RoundTripper {
-	hc, err := ContextClient(ctx)
-	// This is a rare error case (somebody using nil on App Engine).
-	if err != nil {
-		return ErrorTransport{err}
-	}
-	return hc.Transport
-}
-
-// ErrorTransport returns the specified error on RoundTrip.
-// This RoundTripper should be used in rare error cases where
-// error handling can be postponed to response handling time.
-type ErrorTransport struct{ Err error }
-
-func (t ErrorTransport) RoundTrip(*http.Request) (*http.Response, error) {
-	return nil, t.Err
-}
diff --git a/vendor/golang.org/x/oauth2/oauth2.go b/vendor/golang.org/x/oauth2/oauth2.go
deleted file mode 100644
index 9b7b977..0000000
--- a/vendor/golang.org/x/oauth2/oauth2.go
+++ /dev/null
@@ -1,337 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package oauth2 provides support for making
-// OAuth2 authorized and authenticated HTTP requests.
-// It can additionally grant authorization with Bearer JWT.
-package oauth2
-
-import (
-	"bytes"
-	"errors"
-	"net/http"
-	"net/url"
-	"strings"
-	"sync"
-
-	"golang.org/x/net/context"
-	"golang.org/x/oauth2/internal"
-)
-
-// NoContext is the default context you should supply if not using
-// your own context.Context (see https://golang.org/x/net/context).
-var NoContext = context.TODO()
-
-// RegisterBrokenAuthHeaderProvider registers an OAuth2 server
-// identified by the tokenURL prefix as an OAuth2 implementation
-// which doesn't support the HTTP Basic authentication
-// scheme to authenticate with the authorization server.
-// Once a server is registered, credentials (client_id and client_secret)
-// will be passed as query parameters rather than being present
-// in the Authorization header.
-// See https://code.google.com/p/goauth2/issues/detail?id=31 for background.
-func RegisterBrokenAuthHeaderProvider(tokenURL string) {
-	internal.RegisterBrokenAuthHeaderProvider(tokenURL)
-}
-
-// Config describes a typical 3-legged OAuth2 flow, with both the
-// client application information and the server's endpoint URLs.
-type Config struct {
-	// ClientID is the application's ID.
-	ClientID string
-
-	// ClientSecret is the application's secret.
-	ClientSecret string
-
-	// Endpoint contains the resource server's token endpoint
-	// URLs. These are constants specific to each server and are
-	// often available via site-specific packages, such as
-	// google.Endpoint or github.Endpoint.
-	Endpoint Endpoint
-
-	// RedirectURL is the URL to redirect users going through
-	// the OAuth flow, after the resource owner's URLs.
-	RedirectURL string
-
-	// Scope specifies optional requested permissions.
-	Scopes []string
-}
-
-// A TokenSource is anything that can return a token.
-type TokenSource interface {
-	// Token returns a token or an error.
-	// Token must be safe for concurrent use by multiple goroutines.
-	// The returned Token must not be modified.
-	Token() (*Token, error)
-}
-
-// Endpoint contains the OAuth 2.0 provider's authorization and token
-// endpoint URLs.
-type Endpoint struct {
-	AuthURL  string
-	TokenURL string
-}
-
-var (
-	// AccessTypeOnline and AccessTypeOffline are options passed
-	// to the Options.AuthCodeURL method. They modify the
-	// "access_type" field that gets sent in the URL returned by
-	// AuthCodeURL.
-	//
-	// Online is the default if neither is specified. If your
-	// application needs to refresh access tokens when the user
-	// is not present at the browser, then use offline. This will
-	// result in your application obtaining a refresh token the
-	// first time your application exchanges an authorization
-	// code for a user.
-	AccessTypeOnline  AuthCodeOption = SetAuthURLParam("access_type", "online")
-	AccessTypeOffline AuthCodeOption = SetAuthURLParam("access_type", "offline")
-
-	// ApprovalForce forces the users to view the consent dialog
-	// and confirm the permissions request at the URL returned
-	// from AuthCodeURL, even if they've already done so.
-	ApprovalForce AuthCodeOption = SetAuthURLParam("approval_prompt", "force")
-)
-
-// An AuthCodeOption is passed to Config.AuthCodeURL.
-type AuthCodeOption interface {
-	setValue(url.Values)
-}
-
-type setParam struct{ k, v string }
-
-func (p setParam) setValue(m url.Values) { m.Set(p.k, p.v) }
-
-// SetAuthURLParam builds an AuthCodeOption which passes key/value parameters
-// to a provider's authorization endpoint.
-func SetAuthURLParam(key, value string) AuthCodeOption {
-	return setParam{key, value}
-}
-
-// AuthCodeURL returns a URL to OAuth 2.0 provider's consent page
-// that asks for permissions for the required scopes explicitly.
-//
-// State is a token to protect the user from CSRF attacks. You must
-// always provide a non-zero string and validate that it matches the
-// the state query parameter on your redirect callback.
-// See http://tools.ietf.org/html/rfc6749#section-10.12 for more info.
-//
-// Opts may include AccessTypeOnline or AccessTypeOffline, as well
-// as ApprovalForce.
-func (c *Config) AuthCodeURL(state string, opts ...AuthCodeOption) string {
-	var buf bytes.Buffer
-	buf.WriteString(c.Endpoint.AuthURL)
-	v := url.Values{
-		"response_type": {"code"},
-		"client_id":     {c.ClientID},
-		"redirect_uri":  internal.CondVal(c.RedirectURL),
-		"scope":         internal.CondVal(strings.Join(c.Scopes, " ")),
-		"state":         internal.CondVal(state),
-	}
-	for _, opt := range opts {
-		opt.setValue(v)
-	}
-	if strings.Contains(c.Endpoint.AuthURL, "?") {
-		buf.WriteByte('&')
-	} else {
-		buf.WriteByte('?')
-	}
-	buf.WriteString(v.Encode())
-	return buf.String()
-}
-
-// PasswordCredentialsToken converts a resource owner username and password
-// pair into a token.
-//
-// Per the RFC, this grant type should only be used "when there is a high
-// degree of trust between the resource owner and the client (e.g., the client
-// is part of the device operating system or a highly privileged application),
-// and when other authorization grant types are not available."
-// See https://tools.ietf.org/html/rfc6749#section-4.3 for more info.
-//
-// The HTTP client to use is derived from the context.
-// If nil, http.DefaultClient is used.
-func (c *Config) PasswordCredentialsToken(ctx context.Context, username, password string) (*Token, error) {
-	return retrieveToken(ctx, c, url.Values{
-		"grant_type": {"password"},
-		"username":   {username},
-		"password":   {password},
-		"scope":      internal.CondVal(strings.Join(c.Scopes, " ")),
-	})
-}
-
-// Exchange converts an authorization code into a token.
-//
-// It is used after a resource provider redirects the user back
-// to the Redirect URI (the URL obtained from AuthCodeURL).
-//
-// The HTTP client to use is derived from the context.
-// If a client is not provided via the context, http.DefaultClient is used.
-//
-// The code will be in the *http.Request.FormValue("code"). Before
-// calling Exchange, be sure to validate FormValue("state").
-func (c *Config) Exchange(ctx context.Context, code string) (*Token, error) {
-	return retrieveToken(ctx, c, url.Values{
-		"grant_type":   {"authorization_code"},
-		"code":         {code},
-		"redirect_uri": internal.CondVal(c.RedirectURL),
-		"scope":        internal.CondVal(strings.Join(c.Scopes, " ")),
-	})
-}
-
-// Client returns an HTTP client using the provided token.
-// The token will auto-refresh as necessary. The underlying
-// HTTP transport will be obtained using the provided context.
-// The returned client and its Transport should not be modified.
-func (c *Config) Client(ctx context.Context, t *Token) *http.Client {
-	return NewClient(ctx, c.TokenSource(ctx, t))
-}
-
-// TokenSource returns a TokenSource that returns t until t expires,
-// automatically refreshing it as necessary using the provided context.
-//
-// Most users will use Config.Client instead.
-func (c *Config) TokenSource(ctx context.Context, t *Token) TokenSource {
-	tkr := &tokenRefresher{
-		ctx:  ctx,
-		conf: c,
-	}
-	if t != nil {
-		tkr.refreshToken = t.RefreshToken
-	}
-	return &reuseTokenSource{
-		t:   t,
-		new: tkr,
-	}
-}
-
-// tokenRefresher is a TokenSource that makes "grant_type"=="refresh_token"
-// HTTP requests to renew a token using a RefreshToken.
-type tokenRefresher struct {
-	ctx          context.Context // used to get HTTP requests
-	conf         *Config
-	refreshToken string
-}
-
-// WARNING: Token is not safe for concurrent access, as it
-// updates the tokenRefresher's refreshToken field.
-// Within this package, it is used by reuseTokenSource which
-// synchronizes calls to this method with its own mutex.
-func (tf *tokenRefresher) Token() (*Token, error) {
-	if tf.refreshToken == "" {
-		return nil, errors.New("oauth2: token expired and refresh token is not set")
-	}
-
-	tk, err := retrieveToken(tf.ctx, tf.conf, url.Values{
-		"grant_type":    {"refresh_token"},
-		"refresh_token": {tf.refreshToken},
-	})
-
-	if err != nil {
-		return nil, err
-	}
-	if tf.refreshToken != tk.RefreshToken {
-		tf.refreshToken = tk.RefreshToken
-	}
-	return tk, err
-}
-
-// reuseTokenSource is a TokenSource that holds a single token in memory
-// and validates its expiry before each call to retrieve it with
-// Token. If it's expired, it will be auto-refreshed using the
-// new TokenSource.
-type reuseTokenSource struct {
-	new TokenSource // called when t is expired.
-
-	mu sync.Mutex // guards t
-	t  *Token
-}
-
-// Token returns the current token if it's still valid, else will
-// refresh the current token (using r.Context for HTTP client
-// information) and return the new one.
-func (s *reuseTokenSource) Token() (*Token, error) {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	if s.t.Valid() {
-		return s.t, nil
-	}
-	t, err := s.new.Token()
-	if err != nil {
-		return nil, err
-	}
-	s.t = t
-	return t, nil
-}
-
-// StaticTokenSource returns a TokenSource that always returns the same token.
-// Because the provided token t is never refreshed, StaticTokenSource is only
-// useful for tokens that never expire.
-func StaticTokenSource(t *Token) TokenSource {
-	return staticTokenSource{t}
-}
-
-// staticTokenSource is a TokenSource that always returns the same Token.
-type staticTokenSource struct {
-	t *Token
-}
-
-func (s staticTokenSource) Token() (*Token, error) {
-	return s.t, nil
-}
-
-// HTTPClient is the context key to use with golang.org/x/net/context's
-// WithValue function to associate an *http.Client value with a context.
-var HTTPClient internal.ContextKey
-
-// NewClient creates an *http.Client from a Context and TokenSource.
-// The returned client is not valid beyond the lifetime of the context.
-//
-// As a special case, if src is nil, a non-OAuth2 client is returned
-// using the provided context. This exists to support related OAuth2
-// packages.
-func NewClient(ctx context.Context, src TokenSource) *http.Client {
-	if src == nil {
-		c, err := internal.ContextClient(ctx)
-		if err != nil {
-			return &http.Client{Transport: internal.ErrorTransport{err}}
-		}
-		return c
-	}
-	return &http.Client{
-		Transport: &Transport{
-			Base:   internal.ContextTransport(ctx),
-			Source: ReuseTokenSource(nil, src),
-		},
-	}
-}
-
-// ReuseTokenSource returns a TokenSource which repeatedly returns the
-// same token as long as it's valid, starting with t.
-// When its cached token is invalid, a new token is obtained from src.
-//
-// ReuseTokenSource is typically used to reuse tokens from a cache
-// (such as a file on disk) between runs of a program, rather than
-// obtaining new tokens unnecessarily.
-//
-// The initial token t may be nil, in which case the TokenSource is
-// wrapped in a caching version if it isn't one already. This also
-// means it's always safe to wrap ReuseTokenSource around any other
-// TokenSource without adverse effects.
-func ReuseTokenSource(t *Token, src TokenSource) TokenSource {
-	// Don't wrap a reuseTokenSource in itself. That would work,
-	// but cause an unnecessary number of mutex operations.
-	// Just build the equivalent one.
-	if rt, ok := src.(*reuseTokenSource); ok {
-		if t == nil {
-			// Just use it directly.
-			return rt
-		}
-		src = rt.new
-	}
-	return &reuseTokenSource{
-		t:   t,
-		new: src,
-	}
-}
diff --git a/vendor/golang.org/x/oauth2/token.go b/vendor/golang.org/x/oauth2/token.go
deleted file mode 100644
index 7a3167f..0000000
--- a/vendor/golang.org/x/oauth2/token.go
+++ /dev/null
@@ -1,158 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package oauth2
-
-import (
-	"net/http"
-	"net/url"
-	"strconv"
-	"strings"
-	"time"
-
-	"golang.org/x/net/context"
-	"golang.org/x/oauth2/internal"
-)
-
-// expiryDelta determines how earlier a token should be considered
-// expired than its actual expiration time. It is used to avoid late
-// expirations due to client-server time mismatches.
-const expiryDelta = 10 * time.Second
-
-// Token represents the crendentials used to authorize
-// the requests to access protected resources on the OAuth 2.0
-// provider's backend.
-//
-// Most users of this package should not access fields of Token
-// directly. They're exported mostly for use by related packages
-// implementing derivative OAuth2 flows.
-type Token struct {
-	// AccessToken is the token that authorizes and authenticates
-	// the requests.
-	AccessToken string `json:"access_token"`
-
-	// TokenType is the type of token.
-	// The Type method returns either this or "Bearer", the default.
-	TokenType string `json:"token_type,omitempty"`
-
-	// RefreshToken is a token that's used by the application
-	// (as opposed to the user) to refresh the access token
-	// if it expires.
-	RefreshToken string `json:"refresh_token,omitempty"`
-
-	// Expiry is the optional expiration time of the access token.
-	//
-	// If zero, TokenSource implementations will reuse the same
-	// token forever and RefreshToken or equivalent
-	// mechanisms for that TokenSource will not be used.
-	Expiry time.Time `json:"expiry,omitempty"`
-
-	// raw optionally contains extra metadata from the server
-	// when updating a token.
-	raw interface{}
-}
-
-// Type returns t.TokenType if non-empty, else "Bearer".
-func (t *Token) Type() string {
-	if strings.EqualFold(t.TokenType, "bearer") {
-		return "Bearer"
-	}
-	if strings.EqualFold(t.TokenType, "mac") {
-		return "MAC"
-	}
-	if strings.EqualFold(t.TokenType, "basic") {
-		return "Basic"
-	}
-	if t.TokenType != "" {
-		return t.TokenType
-	}
-	return "Bearer"
-}
-
-// SetAuthHeader sets the Authorization header to r using the access
-// token in t.
-//
-// This method is unnecessary when using Transport or an HTTP Client
-// returned by this package.
-func (t *Token) SetAuthHeader(r *http.Request) {
-	r.Header.Set("Authorization", t.Type()+" "+t.AccessToken)
-}
-
-// WithExtra returns a new Token that's a clone of t, but using the
-// provided raw extra map. This is only intended for use by packages
-// implementing derivative OAuth2 flows.
-func (t *Token) WithExtra(extra interface{}) *Token {
-	t2 := new(Token)
-	*t2 = *t
-	t2.raw = extra
-	return t2
-}
-
-// Extra returns an extra field.
-// Extra fields are key-value pairs returned by the server as a
-// part of the token retrieval response.
-func (t *Token) Extra(key string) interface{} {
-	if raw, ok := t.raw.(map[string]interface{}); ok {
-		return raw[key]
-	}
-
-	vals, ok := t.raw.(url.Values)
-	if !ok {
-		return nil
-	}
-
-	v := vals.Get(key)
-	switch s := strings.TrimSpace(v); strings.Count(s, ".") {
-	case 0: // Contains no "."; try to parse as int
-		if i, err := strconv.ParseInt(s, 10, 64); err == nil {
-			return i
-		}
-	case 1: // Contains a single "."; try to parse as float
-		if f, err := strconv.ParseFloat(s, 64); err == nil {
-			return f
-		}
-	}
-
-	return v
-}
-
-// expired reports whether the token is expired.
-// t must be non-nil.
-func (t *Token) expired() bool {
-	if t.Expiry.IsZero() {
-		return false
-	}
-	return t.Expiry.Add(-expiryDelta).Before(time.Now())
-}
-
-// Valid reports whether t is non-nil, has an AccessToken, and is not expired.
-func (t *Token) Valid() bool {
-	return t != nil && t.AccessToken != "" && !t.expired()
-}
-
-// tokenFromInternal maps an *internal.Token struct into
-// a *Token struct.
-func tokenFromInternal(t *internal.Token) *Token {
-	if t == nil {
-		return nil
-	}
-	return &Token{
-		AccessToken:  t.AccessToken,
-		TokenType:    t.TokenType,
-		RefreshToken: t.RefreshToken,
-		Expiry:       t.Expiry,
-		raw:          t.Raw,
-	}
-}
-
-// retrieveToken takes a *Config and uses that to retrieve an *internal.Token.
-// This token is then mapped from *internal.Token into an *oauth2.Token which is returned along
-// with an error..
-func retrieveToken(ctx context.Context, c *Config, v url.Values) (*Token, error) {
-	tk, err := internal.RetrieveToken(ctx, c.ClientID, c.ClientSecret, c.Endpoint.TokenURL, v)
-	if err != nil {
-		return nil, err
-	}
-	return tokenFromInternal(tk), nil
-}
diff --git a/vendor/golang.org/x/oauth2/transport.go b/vendor/golang.org/x/oauth2/transport.go
deleted file mode 100644
index 92ac7e2..0000000
--- a/vendor/golang.org/x/oauth2/transport.go
+++ /dev/null
@@ -1,132 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package oauth2
-
-import (
-	"errors"
-	"io"
-	"net/http"
-	"sync"
-)
-
-// Transport is an http.RoundTripper that makes OAuth 2.0 HTTP requests,
-// wrapping a base RoundTripper and adding an Authorization header
-// with a token from the supplied Sources.
-//
-// Transport is a low-level mechanism. Most code will use the
-// higher-level Config.Client method instead.
-type Transport struct {
-	// Source supplies the token to add to outgoing requests'
-	// Authorization headers.
-	Source TokenSource
-
-	// Base is the base RoundTripper used to make HTTP requests.
-	// If nil, http.DefaultTransport is used.
-	Base http.RoundTripper
-
-	mu     sync.Mutex                      // guards modReq
-	modReq map[*http.Request]*http.Request // original -> modified
-}
-
-// RoundTrip authorizes and authenticates the request with an
-// access token. If no token exists or token is expired,
-// tries to refresh/fetch a new token.
-func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
-	if t.Source == nil {
-		return nil, errors.New("oauth2: Transport's Source is nil")
-	}
-	token, err := t.Source.Token()
-	if err != nil {
-		return nil, err
-	}
-
-	req2 := cloneRequest(req) // per RoundTripper contract
-	token.SetAuthHeader(req2)
-	t.setModReq(req, req2)
-	res, err := t.base().RoundTrip(req2)
-	if err != nil {
-		t.setModReq(req, nil)
-		return nil, err
-	}
-	res.Body = &onEOFReader{
-		rc: res.Body,
-		fn: func() { t.setModReq(req, nil) },
-	}
-	return res, nil
-}
-
-// CancelRequest cancels an in-flight request by closing its connection.
-func (t *Transport) CancelRequest(req *http.Request) {
-	type canceler interface {
-		CancelRequest(*http.Request)
-	}
-	if cr, ok := t.base().(canceler); ok {
-		t.mu.Lock()
-		modReq := t.modReq[req]
-		delete(t.modReq, req)
-		t.mu.Unlock()
-		cr.CancelRequest(modReq)
-	}
-}
-
-func (t *Transport) base() http.RoundTripper {
-	if t.Base != nil {
-		return t.Base
-	}
-	return http.DefaultTransport
-}
-
-func (t *Transport) setModReq(orig, mod *http.Request) {
-	t.mu.Lock()
-	defer t.mu.Unlock()
-	if t.modReq == nil {
-		t.modReq = make(map[*http.Request]*http.Request)
-	}
-	if mod == nil {
-		delete(t.modReq, orig)
-	} else {
-		t.modReq[orig] = mod
-	}
-}
-
-// cloneRequest returns a clone of the provided *http.Request.
-// The clone is a shallow copy of the struct and its Header map.
-func cloneRequest(r *http.Request) *http.Request {
-	// shallow copy of the struct
-	r2 := new(http.Request)
-	*r2 = *r
-	// deep copy of the Header
-	r2.Header = make(http.Header, len(r.Header))
-	for k, s := range r.Header {
-		r2.Header[k] = append([]string(nil), s...)
-	}
-	return r2
-}
-
-type onEOFReader struct {
-	rc io.ReadCloser
-	fn func()
-}
-
-func (r *onEOFReader) Read(p []byte) (n int, err error) {
-	n, err = r.rc.Read(p)
-	if err == io.EOF {
-		r.runFunc()
-	}
-	return
-}
-
-func (r *onEOFReader) Close() error {
-	err := r.rc.Close()
-	r.runFunc()
-	return err
-}
-
-func (r *onEOFReader) runFunc() {
-	if fn := r.fn; fn != nil {
-		fn()
-		r.fn = nil
-	}
-}