最牛逼的动画

https://icanzilb.github.io/ios-animations-by-emails/welcome/

http://www.jianshu.com/p/352ff1ed5d32

http://www.jianshu.com/p/0ed539aae7ff
http://www.jianshu.com/u/0cf7d455eb9e
http://www.jianshu.com/p/1d5a528053aa