Ability to set other command prefix

In case you want your commands to start with a dot, use
`bot.setCommandPrefix('.');`
Deprecate setLogObject

Use setLogger instead
Improve code for joining room
Add function to move a user in waitlist through user object
Deprecate old parameters for getTwitterAuth

Use getTwitterAuth(username, password, callback) instead of
getTwitterAuth(creds, callback)
Deprecate moderateUnBanUser

Use moderateUnbanUser instead