(aka Improving Code Assist with convention-based completions.json")

For #7 we can quickly get value by updating completions.js with latest Nodejs.sublime-completions. The SublimeText-Nodejs PROJECT LOOKING FOR NEW MAINTAINER, but is quite active.

So our code completion will be not worse that SublimeText, and users can contribute to both projects by updating Nodejs.sublime-completions.

I propose to (optionally) support Sublime text. I have already contributed to option to have completions.json as external file