官网地址：https://packagecontrol.io/installation
Use one of the following methods to install Package Control: 三种安装方法（前两种是已经有安装包的，第三种是手动）
1、Command Palette 命令面板
- Open the command palette
Win/Linux: ctrl+shift+p, Mac: cmd+shift+p - Type Install Package Control, press enter
2、Menu 菜单
- Open the Tools menu
- Select Install Package Control…
This will download the latest version of Package Control and verify it using public key cryptography. If an error occurs, use the manual method instead.
3、Manual 手动安装
If the command palette/menu method is not possible due to a proxy on your network or using an old version of Sublime Text, the following steps will also install Package Control:
- Click the Preferences > Browse Packages… menu
- Browse up a folder and then into the Installed Packages/ folder
- Download Package Control.sublime-package and copy it into the Installed Packages/ directory