New shadow mute behavior and bug fixes.
Merge pull request #26 from kungfuant/shadowmute

New shadow mute behavior and bug fixes.
Include instructions for Mac OS X.
Merge pull request #27 from kungfuant/guidemac

Include instructions for Mac OS X.
Rename 'UserClass' to 'UserClassEnum'
Use proper case username
Disallow muting admins.
Merge pull request #28 from kungfuant/nomuteadmin

Disallow muting admins.
Fix crash bug
Domain bump
Broadcast shadow mutes to moderators.
Merge pull request #30 from kungfuant/shadowmutebroadcast

Broadcast shadow mutes to moderators.