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

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