lib/chatterbot/direct_messages.rb
def direct_message(txt, user=nil)
      return unless require_login

      if user.nil?
        user = current_user
      end
      client.create_direct_message(user, txt)
    end
def direct_message(txt, user=nil)
      return unless require_login

      if user.nil?
        user = current_user
      end
      client.create_direct_message(user, txt)
    end
send a direct message