notifications_controller.rb

    render :xml => Twilio::Verb.new { |v|
      v.gather(:numDigits => 1, :timeout => 5, :action => recording_script_notification_url(@notification)) do 
        v.play @notification.voicemessage_url
        v.say "If you would like to record again, press one, otherwise stay on the line"
      end
      v.say "Your notification is being sent"
      v.redirect send_notification_notification_url(@notification)
    }.response