works also with bash and printf

Hey there,
thanks for this. Maybe someone else finds this useful: It's also possible to control the LEDs with this kernel-module and shell:
This is for two LEDs:
`sudo bash -c 'printf "\x20\x20\x20\x20\x20\x20" > /dev/ws281x'`
The hex values mean brightness of: First LED green-red-blue, second LED green-red-blue, and so on.

Best regards
