Merge pull request zhonghuasheng#296 from zhonghuasheng/develop

docs(tech skills): update the picture of skill stack tutorial-2020-07…

Author: zhonghuasheng

README.md

@@ -84,6 +84,6 @@
 <h2 align="center">技术栈</h2>
 <center>
 
-![](tutorial-2020-06-30.png)
+![](tutorial-2020-07-04.png)
 
 </center>