添加介绍

ZhipingYang · ZhipingYang · commit a482a12f0f0b · 2015-04-11T21:40:33.000+08:00
Signed-off-by: Zhiping Yang &lt;XcodeYang@Gmail.com&gt;
diff --git a/README.md b/README.md
@@ -2,3 +2,14 @@
 UIKit Dynamic UIDynamicAnimator UIDynamicBehavior
 
 ##主要用来理解实战iOS7的物理引擎
+
+![图片三](https://github.com/ZhipingYang/UIKitDynamics/raw/master/demo.png)  
+
+UIKitDynamics | 作用及用法
+----- | -----
+UIDynamicAnimator | 引擎载体
+[UIGravityBehavior](https://github.com/ZhipingYang/UIKitDynamics/blob/master/DynamicsDemo/GravityViewController.m) | 重力行为
+[UICollisionBehavior](https://github.com/ZhipingYang/UIKitDynamics/blob/master/DynamicsDemo/CollosionViewController.m) | 碰撞行为
+[UIAttachmentBehavior](https://github.com/ZhipingYang/UIKitDynamics/blob/master/DynamicsDemo/AttachmentViewController.m) | 链接行为（弹簧效果）
+[UISnapBehavior](https://github.com/ZhipingYang/UIKitDynamics/blob/master/DynamicsDemo/SnapViewController.m) | 吸附行为
+[UIPushBehavior](https://github.com/ZhipingYang/UIKitDynamics/blob/master/DynamicsDemo/PushViewController.m) | 受力行为
