title: iOS Android Material Design Hierarchical Timing using UICollectionView
body: <p>I want to do the animation introduced by Android Material Design <a href="http://www.google.com/design/spec/animation/meaningful-transitions.html#meaningful-transitions-hierarchical-timing">Hierarchical Timing</a> in iOS using UICollectionView</p>
  
  <p>Lets say its a collectionView, and resizing the view is not an issue, what would be the best practice to do this animation in that timely fashion. How to perform the delay</p>