Sublime text2 package control install:

Go to link
https://packagecontrol.io/installation
Copy python code for sublime text2/3

ctrl+`  --> To open console.

Paste python code, then press enter

Restart sublime.

Ex: To install trailing spaces.

Then install package Trailing spaces(like package control)

ctrl+shift+p search for package control press enter.

ctrl+shift+p search for trailing space press enter.