[iOS] Moved DemoApp into subdirectory
[Android] Created DemoApp
[DemoApp] Changed 'MainActivity' to 'LoginActivity' for android app
[DemoApp][Android] Removed unnecessary code
[DemoApp][Android] Added facebook login button
[Android] Added 'lint.xml'
[DemoApp][Android] Added LoginFragment
[DemoApp][Android] Updated Facebook SDK
[DemoApp][Android] Getting user info
[DemoApp][Android] Added Annot8 plugin
[DemoApp][Android] Copied Annot8 plugin assets
[DemoApp][Android] Copied Annot8 plugin assets
[DemoApp][Android] Changed theme