##
  # Campfire [Notifier]
  #
  notify_by Campfire do |campfire|
    campfire.on_success = true
    campfire.on_failure = true

    campfire.api_token = 'my_api_authentication_token'
    campfire.subdomain = 'my_subdomain'
    campfire.room_id   = 'my_room_id'
  end