Added minimal TODO list for beaglebone black work.
Changed code to use BeagleBone Black PWM outputs, removed arduino code.
Altered code to work with BBB, but disabled PWM output.
Included actual PWM outputs and fixed ctrl-c exit to shut down PWM and
socket cleanly.
Handling ctrl-c more cleanly.
Added comments to joy_control.py for clarity.
Changed scaled values to use a larger range for slightly better precision.
(using 0-250 instead of 0-180)
move dead zone calculation to server (old code left behind in case of errors).
Fix missed variable name change
Removed old code, simplified convert() method.
Update Readme for BBB
Update README.md
Added rudimentary control scaling and command line arguments for dead zone and scale percentages