Fix Crash in rainbowCycle (#287)
Fix Crash in rainbowCycle (#287)

When running this script, I was getting a TypeError: unsupported operand type(s) for &: 'float' and 'int'
on line 64. `//` returns int instead of float like `/` does, which fixes this issue.
jgarff/rpi_ws281x,jgarff/rpi_ws281x,jgarff/rpi_ws281x