WS2812B array code

Rayman

This is pretty trivial, but this code can write to an array of WS2812B.
It's in assembly and tested with FastSpin.

Put an array of 3535 size on my new USB/Hyperflash board.

It doesn't do the gamma correction like Jon's code in OBEX, but that can be added pretty easily.

Publison

That's pretty cool, Ray.