wading into Arduino waters

First simple version that trys to use Arduino communication.  Only the
script running even tries to send commands.  Completely untested at
present. :)
Functional two way communication

Well holy falafel batman it works.  I'm able to send and receive
messages to the Arduino.  I made a small Arduino program that sends
messages with a debounced interrupt and if that command is a script then
I run it.  Works.  Still need to test on physical hardware.