Improving integration tests. Adding popup tests.
Renaming auth0-auth -> auth0. auth0 -> auth0-redirect
Changing default example port to 3000.
Fixing angular dependency 1.2.14 -> 1.2.16
Adding Redirect example.
Social authentication is by default done using popup.

* Added `auth.loaded` promise
* `AUTH_EVENTS.redirectEnded` fires correctly
* Now `auth.signin` method returns a promise.
* Replaced $safeApply with $timeout.