Update README.md

Author: daimajia

README.md

@@ -26,9 +26,7 @@ When I start to make this library, I set some goals:
 - Can receive `onOpen`,`onClose`,`onUpdate` callbacks.
 - Can notifiy the hidden children how much they have shown.
 - Can be nested each other.
-- Can handle complicate situation, just like this:
-
-![](http://ww1.sinaimg.cn/large/610dc034gw1ekhojsy2arg208e06ngt1.gif)
+- Can handle complicate situation, just like [this](https://camo.githubusercontent.com/d145d9a9508b3d204b70882c05bc3d9bd433883c/687474703a2f2f7777312e73696e61696d672e636e2f6c617267652f3631306463303334677731656b686f6a7379326172673230386530366e6774312e676966).
 
 
 ## Usage