Moved UIViewControllerTransitioningDelegate inside transitionController;
Added inline documentation
Merge branch 'interactive' of github.com:urbn/URBNCarousel into interactive

Conflicts:
	Example/URBNCarousel.xcodeproj/project.pbxproj
	Pod/Classes/URBNCarouselTransitionController.m
	Pod/Classes/URBNCarouselTransitionView.h
	Pod/Classes/URBNCarouselTransitionView.m
	URBNCarousel/UIImageView+ImageFrame.h