Replaced 1 Arduino with ESC

Replaced the motor control Arduino with a Traxxas EVX2 Forward/Reverse
Waterproof ESC
http://www.gravesrc.com/Traxxas_EVX2_Forward_Reverse_Waterproof_ESC_p/tra3019r.htm
Running it with the raspberry pi using servo blaster.

I connected the LED's to the steering control arduino. Added code for it
(I2C).
Updated readme