The input event is fired on all non-ie browsers whenever the contents of an input
field changes. This means that we now support cut&paste via mouse which
was previously unsupported.
IE8 and older don't support this events and IE9 has a problematic
support for it, so we can't rely solely on this event and drop keydown
and change events.
- 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
