notify_by Twitter do |tweet|
    tweet.on_success = true
    tweet.on_failure = true

    tweet.consumer_key       = 'my_consumer_key'
    tweet.consumer_secret    = 'my_consumer_secret'
    tweet.oauth_token        = 'my_oauth_token'
    tweet.oauth_token_secret = 'my_oauth_token_secret'
  end