Merge pull request #58 from chitopolo/master

Moderator almost finish
working on presentation view
working on qrcode
Up to date
qrCode | viewer slave working
Merge pull request #61 from coryasato/master

QR Code Working.  Slave View Working.
Progress on markdown preview
Merge pull request #62 from cmperez/markdownPreviewFeature

Progress on markdown preview feature
Question with unique Url
Votes working with Unique URL
Fixed small error