#FlexiTimer2 Library#
Run a function on a configurable interval.
http://playground.arduino.cc/Main/FlexiTimer2
https://github.com/wimleers/flexitimer2
http://www.pjrc.com/teensy/td_libs_MsTimer2.html
Based on MsTimer2 originally written by Javier Valencia.
Wim Leers added code which makes interval resolution configurable,