Correcting XBee/XBee-PRO S2C ZigBee document link.
Correcting XBee/XBee-PRO S2C ZigBee document link.

http://www.digi.com/resources/documentation/digidocs/pdfs/90002002.pdf
neutralio/python-xbee,nioinnovation/python-xbee,jamesleesaunders/python-xbee