Transition3D CleanUp

1. No more delegate - API is the same as in master branch, only style added
2. White view is in library now and fixed
3. Updated demo application

Next time i'm gonna fork someone's repo - i will immediately give them access to my fork to work on Pull Request together without recreating it & it's branches.

This one goes to feature-transition3d, so you can merge it right now and then work in your repo & merge feature-transition3d to master when it's ready.
Or you can reopen https://github.com/jcoleman/JCNotificationBannerPresenter/pull/3 & push to https://github.com/psineur/JCNotificationBannerPresenter/tree/feature-transition3d - i just granted you access.

Cheers!

:shipit: 
;)