添加示例截图

example/README.md

@@ -11,3 +11,11 @@ $ npm run android
 ## iOS
 
 暂不支持
+
+## 截图
+
+![](https://user-images.githubusercontent.com/1709072/26939304-8a802514-4ca9-11e7-82f7-e0c660d77fa2.png) ![](https://user-images.githubusercontent.com/1709072/26939380-bc738ce6-4ca9-11e7-9e59-29076afcbfdd.png)
+
+![](https://user-images.githubusercontent.com/1709072/26939445-e7869cac-4ca9-11e7-8fd7-9399d5ee8850.png) ![](https://user-images.githubusercontent.com/1709072/26939459-f3901000-4ca9-11e7-9bf8-0949a8cec58c.png)
+
+![](https://user-images.githubusercontent.com/1709072/26939479-04eb3050-4caa-11e7-91f6-4fff6fc137be.png) ![](https://user-images.githubusercontent.com/1709072/26939491-0b644084-4caa-11e7-9859-8788e44ac185.png)