Set room in author when receive a message
Merge pull request #3 from bfcamara/fix-room-user-not-set

Set room in author when receive a message
updated version
Fix the way user data was stored in brain.
  There was no side effects everything worked, but now it is correct.
  Only try to process message.posted event types
Removed trailling whitespaces
  removed trailling whitespaces and corrected some indentations from 4 to 2 spaces
reduced some lines to have less than 80 chars to be more compliant with coffeescript coding guidelines
Merge pull request #4 from tspascoal/master

Minor user handling fix and removed trailing whitespaces