Added longjohn dependency to package.json
Added 2-way SSL/TLS client certificate authorization; revised HMAC authorization; corrected error audit-logging bug from cyclical error instance being logged; added "503/Service Unavailable" response to proxy_client request error event; added content-type to error responses; revised error response body texts; removed longjohn dependency.
Added round-robin load-balancing for multiple hostname, path routes.
Removed load-balancing debug output.
Merge pull request #8 from JohnWMay/master

Added longjohn dependency to package.json
Added revised server timeout event (no res available exception fixed); added request socket timeout and response; added secureServer timeout and event; added reqDateTime and resDateTime to auditing with moment library; updated chain default.json to match default default.json.
Merge pull request #11 from JohnWMay/master

Added revised server timeout event (no res available exception fixed); a...
Fixed incorrect MIME-type value of "application/octlet-stream" to be "application/octet-stream" in binary file audit logging storage in getContentType() method in gateway.js.
Merge pull request #12 from JohnWMay/master

Fixed incorrect MIME-type value of "application/octlet-stream" to be "ap...