Update README.md

add demonstration

README.md

@@ -1,3 +1,25 @@
+
+## demonstration
+
+![redux 基本使用](http://upload-images.jianshu.io/upload_images/5683553-edc8d5126cf1f401?imageMogr2/auto-orient/strip)
+
+模仿官方 [Todos](https://codesandbox.io/s/github/reactjs/redux/tree/master/examples/todos)  demo 的`react native`版。
+
+***
+
+![redux Middleware使用](http://upload-images.jianshu.io/upload_images/5683553-5aac6009d041bb4d?imageMogr2/auto-orient/strip)
+
+模仿官方 [async](https://codesandbox.io/s/github/reactjs/redux/tree/master/examples/async)  demo 的`react native`版。
+
+
+***
+
+![集成react-native-navigation后ios演示图](https://upload-images.jianshu.io/upload_images/5683553-6b2ca647d5148423.gif?imageMogr2/auto-orient/strip)
+
+![集成react-native-navigation后android演示图](https://upload-images.jianshu.io/upload_images/5683553-c0a2e3f1e8650a6e.gif?imageMogr2/auto-orient/strip)
+
+集成`react-native-navigation`后把前两个`domo`综合。
+
 ## Installation and Usage
 
 ```
@@ -14,4 +36,4 @@ $ npm install
 
 ```
 $ react-native run-ios/run-android
-```
+```