Update http://arduino.cc/en/Tutorial/ArduinoISP

I would also love to see this page updated. I've been going around in circles trying to pull this off, finding lots of different (undated) tutorials with slightly different advice, slightly different hardware libraries, etc, none of which seems to work.

It tutorials had publish dates, or existed on a wiki, this would be less of an issue. The people in the small crew that actually can update this page, I'm sure are terribly busy.