Added a readme.
Added a readme.

ninjasphere/sphere-go-led-controller,lindsaymarkward/sphere-go-led-controller,lindsaymarkward/sphere-go-led-controller,ninjasphere/sphere-go-led-controller,lindsaymarkward/sphere-go-led-controller,lindsaymarkward/sphere-go-led-controller,ninjasphere/sphere-go-led-controller,ninjasphere/sphere-go-led-controller