Infinitely Cyclic Scrolling Gallery With a UICollectionView
###Demo
Inspired by this article: http://adoptioncurve.net/archives/2013/07/building-a-circular-gallery-with-a-uicollectionview/
Reference http://www.acnenomor.com/2319269p1/how-to-implement-cyclic-scrolling-on-tableview http://stackoverflow.com/questions/13490065/keeping-the-contentoffset-in-a-uicollectionview-while-rotating-interface-orienta