Adds support for gzip and deflate compression

[mvdwalle]

Twitter can support gzip compression. I added the option gzip: true to the request and added code to handle either gzip, deflate or none.

I took a quick look at how the tests were set up and I could create tests for this if wanted. But I wanted someone to review first.

[nathanbowser]

This seems reasonable to me. Have you been using this branch in your own work?

I'd like to see an opt-in approach to this, though.

e.g.

new Twitter({
    consumer_key: '',
    consumer_secret: '',
    token: '',
    token_secret: ''
  }, {
   gzip: true // defaults to false to prevent any potential breakage. 
  })

[mvdwalle]

I chanegd the pull request as suggested. This change is one of a few that we are or want to use internally at my company.

[nathanbowser]

Awesome, thanks! I'd say once you write some tests, we can get this merged.

[fourpixels]

Any news? Is this still supported?

[nathanbowser]

Module is supported. Waiting on tests for this PR