def reply(txt, source, params = {})
      debug txt
      params = {:in_reply_to_status_id => source.id}.merge(params)
      tweet txt, params, source
    end
def reply(txt, source, params = {})
      debug txt
      params = {:in_reply_to_status_id => source.id}.merge(params)
      tweet txt, params, source
    end
reply to a tweet