Facebook have just released a cool little library which has all the cool little animations that they are using in the Pages app.
Certainly worth a download and a play:
https://github.com/facebook/pop
There has been some really good releases from facebook recently, hats off to them.
I noticed that the animations are very similar to a tool I used a while back called canvas
https://github.com/CanvasPod/Canvas
Try them both, all pretty cool and give your app that special feel to it.
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