Use CADisplayLink instead of NSTimer to know when to redraw on scroll.
Don't require the delegate to implement collectionView:itemAtIndexPath:willMoveToIndexPath:
add collectionView:itemAtIndexPath:didMoveToIndexPath:
Gracefully cancel cell reordering when application will resign active notification sent
Merge pull request #30 from zadr/master

Use CADisplayLink instead of NSTimer, dataSource updates
- Updates README to includes alternative libraries.
Update README.md

- fix code sample
- update install steps
Merge pull request #37 from cbess/patch-1

Update README.md
Merge pull request #34 from sibljon/master

Gracefully cancel cell reordering when application will resign active notification sent
Remove UIApplicationWillResignActiveNotification on dealloc

This should fix the crash described in #38.
Merge pull request #39 from tonyarnold/master

Remove UIApplicationWillResignActiveNotification on dealloc
Merge commit 'f3033c109274a31c1db01cca5f4ab13cfb3e457a'