Merge pull request #5 from dvazquez1027/master

throw error 500 on ECONNRESET.
Added winston logging; updated logging message output; added code comments; added X-Response-Time header via Connect; others.
Merge pull request #6 from JohnWMay/master

Added winston logging; updated logging message output; added code commen...
Finished implementin proxy_client.on(error) event code and removed 'res already sent' error bug, added more logging, added callback methods to fs.unlink() calls, added util.inspect(options) to proxy request options log statement to fix winston bug, fixed bug in cluster.on(disconnect) event log statement.
Merge pull request #7 from JohnWMay/master

Finished implementin proxy_client.on(error) event code and removed 'res ...