Update and rename xxx.markdown to 2018-07-21-welcome-to-xx.markdown

Author: myandroidgithub

_posts/xxx.markdown renamed to _posts/2018-07-21-welcome-to-xx.markdown

@@ -1,8 +1,8 @@
- ---
+---
 layout: post
-title:  "xxxxxxxxxxxxxxx!"
+title:  "Welcome to xx!"
 date:   2018-07-21 17:05:13 +0000
-categories: xxsxsxs
+categories: xx update
 ---
 You’ll find this post in your `_posts` directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run `jekyll serve`, which launches a web server and auto-regenerates your site when a file is updated.