readme.md

1. packagecontrol.io/channel_v3.json 本地备份，引用路径如下;
   1.1. https://raw.githubusercontent.com/dxinef/sublime_packagecontrol_backup/master/channel_v3.json (github)
   1.2. https://dxinef.gitee.io/sublime_packagecontrol_backup/channel_v3.json (gitee)
   1.3. https://st.x2y2.com/channel_v3.json (tkx @fisker; packagecontrol.io 镜像: https://st.x2y2.com/)

2. 自己写的plugin;

3. 其他packagecontrol备份文件;