Adding Support for multiple boards

heroku config:set --app trello-hipchat-bot TRELLO_BOARD="123,456,789"
Updating deps
Merge pull request #1 from markuskobler/patch-1

Adding Support for multiple boards
Support multiple rooms (to be optionally used with multiple boards)
Merge pull request #4 from kerkero/multiple_rooms

Add support for multiple HipChat rooms