Added dependencies for websockets support.

Added: express, browserify-middleware and mqtt.js-over-websockets
Added websocket support.
Added CLI parameters for HTTP and websockets.
Added a little static web server to websocket support.
Added serving a browserify bundle to websocket support.
Setted the MQTT library to the browserify branch.
Added some demo slides for websocket integration.
Merge branch 'master' into websockets

Conflicts:
	package.json
Merge pull request #44 from mcollina/websockets

Support MQTT over Websocket