[Chicken-users] New egg: Raspberry Pi GPIO library

[Caolan McMahon]

I've put together a wrapper for wiringPi, which means you can control
the raspberry pi gpio pins from chicken:
https://github.com/caolan/raspberry-pi-gpio

If someone could add it to the index that would be great :)

I also have a module based on this for easy use of buttons attached to
gpio (with debounce etc). I'll package that up and send it round soon.

Caolan