More work on the headless RPi with LCD and buttons

I intend to run my RPi headless, here is a collection of good resources so I can find them again...

To build and interact with buttons...
https://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/robot/buttons_and_switches/

Run scripts on startup and shutdown, not sure if they mixup /etc/rc0.d with /etc/rc6.d
http://en.kioskea.net/faq/3348-ubuntu-executing-a-script-at-startup-and-shutdown

Spawn subprocesses in python and interact with them
http://docs.python.org/2/library/subprocess.html#module-subprocess

I added a button to the circuit...