Add option to select path to tty.ledmatrix.
Add option to select path to tty.ledmatrix.

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