Flushed the socket before it ends
Moving some things around to get reliable Twilio posts
Merge #447 r=@johnnyman727: Flushed the socket before it ends

Fixes #445 and #422.
Adds support for start and end offsets to buffer.toString. Fixes #448.
Returns utf8 encoded string on binary or ascii encoding request
Merge #449 r=@johnnyman727: Adds support for start and end offset parameters to buffer.toString
Merge branch 'master' into issue-275