* version number is stored in version.yaml
  - work in progress is marked with version number that ends with '-snapshot'
* all compiled files are stored in the './build/' directory without version numbers
* :package task creates a tarball in the build directory
  - if version number contains '-snapshot', this substring is replaced with sha of the head
  - tarball contains version number in the filename
  - all js files contain version number in the filename
* .gitignore was updated to reflect all these changes
* the .map file is not created by the closure compiler any more

 - Also fixed angular.suffix for scenarios
 - refactored click() to browserTrigger()
 - Fixed Rakefile with CSS and jQuery

We are not going to do advanced optimization in the forseeable
future, so until then we don't need we should remove them from
Rakefile.

* embedded images as data URIs
* rake task to generate multipart js file with embeded images for IE
* move images into a separate directory outside of src or css and
  keep them there for reference
* clean up Rakefile and ruby code
* .gitignore update
* don't penalize IE 8+ with an extra request to the ie-compat.js file

Uses the Jasmine syntax for tests, ex:

describe('widgets', function() {
  it('should verify that basic widgets work', function(){
    navigateTo('widgets.html');
    input('text.basic').enter('Carlos');
    expect(binding('text.basic')).toEqual('Carlos');
    input('text.basic').enter('Carlos Santana');
    expect(binding('text.basic')).not().toEqual('Carlos Boozer');
    input('text.password').enter('secret');
    expect(binding('text.password')).toEqual('secret');
    expect(binding('text.hidden')).toEqual('hiddenValue');
    expect(binding('gender')).toEqual('male');
    input('gender').select('female');
    expect(binding('gender')).toEqual('female');
  });
});

Note: To create new UI's implement the interface shown in angular.scenario.ui.Html.

- removing angular-scenario.css (it's already inlined in the js)
- adding angular-mocks.js

  - added angular.injector(scope, services, instanceCache) which returns inject
    - inject method can return, instance, or call function which have $inject
      property
    - initialize services with $creation=[eager|eager-publish] this means that
      only some of the services are now globally accessible
  - upgraded $become on scope to use injector hence respect the $inject property
    for injection
    - $become should not be run multiple times and will most likely be removed
      in future version
  - added $new on scope to create a child scope
     - $inject is respected on constructor function
  - simplified scopes so that they no longer have separate __proto__ for
    parent, api, behavior and instance this should speed up execution since
    scope will now create one __proto__ chain per scope (not three).

BACKWARD COMPATIBILITY WARNING:
  - services now need to have $inject instead of inject property for proper
    injection this breaks backward compatibility
  - not all services are now published into root scope
    (only: $location, $cookie, $window)
  - if you have widget/directive which uses services on scope
    (such as this.$xhr), you will now have to inject that service in
    (as it is not published on the root scope anymore)