Controller is standalone object, created using "new" operator, not messed up with scope anymore.
Instead, related scope is injected as $scope.
See design proposal: https://docs.google.com/document/pub?id=1SsgVj17ec6tnZEX3ugsvg0rVVR11wTso5Md-RdEmC0kCloses#321Closes#425
Breaks controller methods are not exported to scope automatically
Breaks Scope#$new() does not take controller as argument anymore
- turn scope into a $rootScope service.
- injector is now a starting point for creating angular application.
- added inject() method which wraps jasmine its/beforeEach/afterEach,
and which allows configuration and injection of services.
- refactor tests to use inject() where possible
BREAK:
- removed angular.scope() method
