学习资源
以下是一些示例供你学习：
PopTut：一个使用POP做动效的示例工程。
http://codeplease.io/ 英文教程。
https://github.com/jxd001/POPdemo 也是Demo，这个是中国人写的。
http://victorbaro.com/2014/05/pop-playground-playing-with-facebooks-framework/
AGGeometryKit+POP - Animating Quadrilaterals with Pop
Apple – Core Animation Programming Guide
Codeplease – Bridging the gesture to animation gap
Codeplease – Playing with Pop (iii)
Codeplease – Adding a custom animatable property
iOS Development Tips – UIScrollView-like deceleration with Pop
Pop Playground – Repository of Pop animation examples
Pop Playground 2 – Playing with Facebook's framework
POP-MCAnimate – Concise syntax for the Pop animation framework
Popping - Great examples in one project
Rebound – Spring Animations for Android
Tapity Tutorial – Getting Started with Pop
Tweaks – Easily adjust parameters for iOS apps in development
POP Tutorial in 5 steps
VBFPopFlatButton – Flat animatable button, using Pop to transition between states
