Thermal printing library for Viper that controls the "micro panel thermal printer" sold in shops like Adafruit and Sparkfun (e.g. http://www.adafruit.com/products/597).

This works is a Viper adaptation of Lauri Kainulainen work (https://github.com/luopio/py-thermal-printer) and it is based on the Adafruit Arduino library developed by Ladyada (https://github.com/adafruit/Adafruit-Thermal-Printer-Library).

Author: Daniele Mazzei, Lauri Kainulainen, Limor Fried (Adafruit) and Giacomo Baldi