Merge pull request #8 from waskito/master

enhance UI and experiment to UI
Fix bug on addParticipant.
Participant.avatar now contains blob URL.
avatar in progresss
Merge branch 'master' of github.com:atherlangga/bonjour
Implement comment posting.
Hack code that loads avatar so it can be run on Node.
Implement Room.prototype.getParticipant.
Remove senderEmail and add date on Comment.
Attach corresponding Participant to the Comment.
loader
Merge branch 'master' of github.com:atherlangga/bonjour
implement post-comment