RDS3231 Class is by Seeed Technology Inc(http://www.seeedstudio.com) and used
in Seeeduino Stalker v2.1 for battery management(MCU power saving mode)
& to generate timestamp for data logging. DateTime Class is a modified
version supporting day-of-week.

Original DateTime Class and its utility code is by Jean-Claude Wippler at JeeLabs
http://jeelabs.net/projects/cafe/wiki/RTClib 

Released under MIT License http://opensource.org/licenses/mit-license.php

