Add wiring layout information

[terrag42]

I love the fact that you included some mapping variables to create mapped patterns! What is the correct wiring for the LEDs to get the best effect from these patterns? I'm guessing that it's a spiral that starts from the bottom of the sphere and goes upward, but I wanted to check before I warm up my hot glue gun.

[jasoncoon]

I think I wired mine from top to bottom, clockwise, but the nice thing about the mapping logic is that it doesn't really matter how they're run physically. It can always be fixed in software. :)

I'll try to take it down and post some pictures of the wiring inside the next time I get a chance.