Added join/leave prompt to conference
Added machineDetection to the call method
added connect to transfer
Removed userType from the Session object
Library update
Merge pull request #29 from kevinbond/master

Library Update
Added machineDetection to transfer
Merge pull request #31 from kevinbond/master

Added machineDetection to transfer
Merge remote-tracking branch 'tropo/master'
Corrected the URLs and references for tropo.com