notify_by Campfire do |campfire|
  campfire.on_success = true
  campfire.on_warning = true
  campfire.on_failure = true

  campfire.api_token = 'my_token'
  campfire.subdomain = 'my_subdomain'
  campfire.room_id   = 'the_room_id'

In order to use Campfire as a notifier you will need a Campfire account. Once you create a Campfire account for the notifier, you need to create a room and take note of its id (room_id) (, get your *api authentication token* from the "My info" page, and take note of your *subdomain* (