Updated XMPPMUC to include functionality for discovering rooms and services
Merge pull request #445 from jonstaff/master

Updated XMPPMUC to include functionality for discovering rooms and services (issue #444)
Added XMPPRegistration to handle XEP-0077
Added documentation
Fixes #450
Merge pull request #448 from jonstaff/xep-0077

XEP-0077 Added Functionality
Fixes #454