Merge pull request #78 from gavllew/master

Fix exception on stream close, support 'npm start', and minor cleanup.
* Bump up dns-srv dep to 0.2.1
* Bump up version to 0.7.4
* Move some undeserving log.info() statements to log.debug()
Improve stream termination handling; add websocket ping generation to keep connection alive
fix oops
fix oops 2