Changelog:
* update to http-proxy@1.1.x; http-proxy@1.0 was a "from-scratch" implementation of
the proxy core by nodejitsu, leaving http-proxy@0.x no longer supported
* implements support for use as grunt middleware;
includes examples for running a proxy url inside `grunt serve`
see https://github.com/gruntjs/grunt-contrib-connect/pull/85
* implements support for proxying to SSL/TLS endpoints
* implements support for connecting to HTTP proxy gateways on the
LAN that require basic authentication credentials
* general housekeeping: added unit tests, resolved jshint issues