* master:
Crazyflies
Updated servo examples to use a limit range of motion instead of full 180.
Update digital read to parseInt buffer response.
DigitalRead buffer data converted to string now.
Debugging digitalPin read.
Added servo example for Raspi.
Add more supported devices to README
Update to 0.6.1
Update digital pin close callback param.
Fixes err param not being passed.
Updated digital pin and added pwm raspi example.
Conflicts:
examples/servo.coffee