Update building instruction for an easy banjo light

For the easy "do it your self" banjo light building instruction which I posted some time ago I've made an update version with a picture of the backside of the banjo with the important building parts.

You can find the building instruction in the attached pdf.

Also previous posted is the operation demo of the banjo light you can find on:

http://www.youtube.com/watch?v=lcsEBwD6nfQ&feature=related