Added debug LED's and code to the Sensor. Cleaned up and re-structured Controller code. Added debug LED's and code to the Controller.
Migrated from a HashMap to an array for tracking sequence numbers. Now, a sensor node's ID must be between [0, MAX_NODES).
Changed the way sequence number verification happens.
Ignoring the dropped first message, the scripted environment data test now works properly.
Fixed some bugs related to the production code. Need to test the motion feature somewhere that isn't busy.
Temporarily commented out the sequence number and ack/nack features of the code...but it is now properly reading and responding to the current environment data
Merge pull request #4 from ameske/master

Scripted tests run, minus an odd dropped message bug. Production code close to running.