I’m working with a Vim, here a tutorial and why I stopped to use Sublime.
I have a configuration in steroid for student developer.
a/open a word in MDN directly in your browser (space bar + z)
c/ lint the js with the amazing JsHint
and 50 others languages, like Ruby, PHP, etc…
a/ the menu autocomplete show you the precise definition for each item.(TAB and Enter)
b/ your just typing 2 letters to have the menu appear
The key leader is the space bar.
here the repo: https://github.com/xavierartot