/** Arduino library to interact with SonMicro SM125 RFID Reader
 *
 * SM125-IC supports Manchester modulation. The supported tags are Atmel / Temic T55xx(Q5, T5551, T5552, 
 * T5554,T5555,T5557) and the industries’ most popular 125 KHz read-only EM4102 tag from the EM Micro.
 *
 * This library is free software; you can redistribute it and/or modify it under the terms of the GNU 
 * Lesser General Public License as published by the Free Software Foundation; either version 2.1 of 
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without 
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this library; 
 * if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
 * 02110-1301  USA
 *
 * @copyright 	(C) 2011 HarvestGardener, All rights reserved.
 * @license 	GNU Lesser General Public License v2.1 or later
 * @version 	0.4b
 * @date		30 March 2011
 * @contact		hrvstgardener [at] gmail [dot] com
 * @link 		https://github.com/HarvestGardener/SM125-125khz-RFID-Arduino-Library
 * @ref			SM125 Datasheet        	- http://www.sonmicro.com/en/downloads/125/ds_SM125_V30.pdf 
 *				SM125 Manual	       	- http://www.sonmicro.com/en/downloads/125/um_SM125.pdf
 *				EM4102 Datasheet		- http://www.sonmicro.com/en/downloads/125/H4102_C.pdf
 *				T5555/Q5 Datasheet		- http://www.sonmicro.com/en/downloads/125/Q5B.pdf
 *      		T55x7 Datasheet  		- http://www.sonmicro.com/en/downloads/125/t5557.pdf
 **/ 
 
Note: This library requires rev 12 of the NewSoftSerial library slightly modded to make write a public function. 
It is required for proper operation of the SM125 library. The modded library is included @ github.

30 March 2011 - The library is mostly complete although there are some functions I have not tested yet. Additionally, there are undocumented 
commands for the SM125 I am not sure how to use. I will try to contact SonMicro to see if they are willing to describe them so I can put them
in the library.