chore(Grunt): switch from Rake to Grunt

Migrates the Angular project from Rake to Grunt.

Benefits:
- Drops Ruby dependency
- Lowers barrier to entry for contributions from JavaScript ninjas
- Simplifies the Angular project setup and build process
- Adopts industry-standard tools specific to JavaScript projects
- Support building angular.js on Windows platform (really?!? why?!?)

BREAKING CHANGE: Rake is completely replaced by Grunt. Below are the deprecated Rake tasks and their Grunt equivalents:

rake --> grunt
rake package --> grunt package
rake init --> N/A
rake clean --> grunt clean
rake concat_scenario --> grunt build:scenario
rake concat --> grunt build
rake concat_scenario --> grunt build:scenario
rake minify --> grunt minify
rake version --> grunt write:version
rake docs --> grunt docs
rake webserver --> grunt webserver
rake test --> grunt test
rake test:unit --> grunt test:unit
rake test:<jqlite|jquery|modules|e2e> --> grunt test:<jqlite|jquery|modules|end2end|e2e>
rake test[Firefox+Safari] --> grunt test --browsers Firefox,Safari
rake test[Safari] --> grunt test --browsers Safari
rake autotest --> grunt autotest

NOTES:
* For convenience grunt test:e2e starts a webserver for you, while grunt test:end2end doesn't.
  Use grunt test:end2end if you already have the webserver running.
* Removes duplicate entry for Describe.js in the angularScenario section of angularFiles.js
* Updates docs/src/gen-docs.js to use #done intead of the deprecated #end
* Uses grunt-contrib-connect instead of lib/nodeserver (removed)
* Removes nodeserver.sh, travis now uses grunt webserver
* Built and minified files are identical to Rake's output, with the exception of one less
  character for git revisions (using --short) and a couple minor whitespace differences

Closes #199

1 files changed, 2 insertions, 2 deletions

diff --git a/src/AngularPublic.js b/src/AngularPublic.js
index 9928a125..3c5e46cb 100644
--- a/src/AngularPublic.js
+++ b/src/AngularPublic.js
@@ -14,8 +14,8 @@
  * - `codeName` – `{string}` – Code name of the release, such as "jiggling-armfat".
  */
 var version = {
-  full: '"NG_VERSION_FULL"',    // all of these placeholder strings will be replaced by rake's
-  major: "NG_VERSION_MAJOR",    // compile task
+  full: '"NG_VERSION_FULL"',    // all of these placeholder strings will be replaced by grunt's
+  major: "NG_VERSION_MAJOR",    // package task
   minor: "NG_VERSION_MINOR",
   dot: "NG_VERSION_DOT",
   codeName: '"NG_VERSION_CODENAME"'