convert snapshot to gif

Author: viclm

README.md

@@ -9,11 +9,9 @@ The numeric keyboard is created respectively for **Vanilla JavaScript**, **React
 
 > for **React**, **Angular** and **Vue**, only the latest version is supported.
 
-:movie_camera: [Watch the demo video](https://fast.wistia.net/embed/iframe/f40gilnlxp) :sunny:
-
 :cn: [中文说明](https://github.com/viclm/numeric-keyboard/blob/master/docs/README.cn.md) :cn: :cn: :cn: :cn:
 
-![snapshot](https://raw.githubusercontent.com/viclm/numeric-keyboard/master/docs/snapshot.png)
+![snapshot](https://raw.githubusercontent.com/viclm/numeric-keyboard/master/docs/demo.gif)
 
 ## Table of contents
 

docs/README.cn.md

@@ -8,9 +8,7 @@
 
 > 对于 **React**、**Angular** and **Vue**，仅支持最新版本的实现。
 
-:movie_camera: [观看演示视频](https://fast.wistia.net/embed/iframe/f40gilnlxp) :sunny:
-
-![snapshot](https://raw.githubusercontent.com/viclm/numeric-keyboard/master/docs/snapshot.png)
+![snapshot](https://raw.githubusercontent.com/viclm/numeric-keyboard/master/docs/demo.gif)
 
 
 ## 目录