Merge pull request #35 from kamalhussain/master

Adding conferencing, mute and unmute
Updated Phono 0.6 vendor adaptor to new att.js API. Backported Chrome 29 video feedback issue.
Merge pull request #36 from loopingrage/master

Updated vendor adaptor to Phono 0.6 GA along with several other fixes
adding header tags for index.php
Merge remote-tracking branch 'upstream/master'