fixing bug that requireds to click twice to make it in full screen:

see in example the "toggle FullScreen" button, after using it once, close the full screen mode and click it again
adding class to allow css to know when in full screen

(helps with forcing certain orientation on mobile devices)
Merge branch 'master' of https://github.com/CosticaPuntaru/angular-fullscreen into test
Merge branch 'test'