增加demo地址

jianyan74 · jianyan74 · commit 1945f5d80b67 · 2018-03-07T09:52:10.000+08:00
diff --git a/README.md b/README.md
@@ -84,4 +84,8 @@ composer require "jianyan74/yii2-websocket"
         console.log('WebSocketError!');
     };
 </script>
-```
+```
+
+### Demo案例
+
+> [点击跳转](http://rageframe.com/addons/execute.html?route=manual/index&addon=AppManual&name=sys-websocket)
