'Sends an SMS to _recipient_ containing _text_.
Method will automatically split long \'text\' into
multiple SMSs up to max_messages.
To enforce only a single SMS, set max_messages=1
Raises \'ValueError\' if text will not fit in max_messages'

def send_sms(self, recipient, text):

    with self.modem_lock:
        self.smshandler.send_sms(recipient, text)
