Add tutorial mode as a module
Tutorial mode with intro.js
Remove step numbers of intro.js.
Change style for tutorial mode.
Remove previous tutorial mode.
Fixes #33 use intro.js for tutorial mode.
Remove useless code.
Merge pull request #36 from azziel149/tutorialMode

Tutorial mode: use intro.js.
Fixes #33
delete files ro refactor
update script list in room.jade
fix some coding style
lay foundations for websocket server
lay foundations on frontend rtc management
peerconnection dance
handle icecandidate
handle userlist
handle text chat
use an event emitter to manage ws / pc events
add video tags when receiving a stream
delete video tag when receiving peer.remove event
zoom on camera when clicking on the thumbnail