Initial UAV IO library

Signed-off-by: Dominic Baratta <dbaratta@buffalo.edu>
Updates to the config.h file to fix a F_CPU define issue related to
eclipse

Signed-off-by: Dominic Baratta <dbaratta@buffalo.edu>
General updates. Also added in the XMEGA A Manual from Atmel

Signed-off-by: Dominic Baratta <dbaratta@buffalo.edu>
Added a start on a library for interfacing to the flight computer
(raspberry pi)

Signed-off-by: Dominic Baratta <dbaratta@buffalo.edu>