Add mock display to let us view the light show without actual lights

[gandalf3]

Current idea is to send light state back to a browser with websockets and render it that way. Alternatively we could render it with tk or similar.

[gandalf3]

I wonder if perhaps throwing it in an opengl window via something like pyglet wouldn't be a pretty good option for this. It wouldn't be as cross platform as sending it to a browser, but we wouldn't have any problem with performance.

[sfoster]

I wonder if perhaps throwing it in an opengl window via something like pyglet wouldn't be a pretty good option for this. It wouldn't be as cross platform as sending it to a browser, but we wouldn't have any problem with performance.

That works for me. I don't have super strong opinions about it. A pyglet controller might be easier to write and a more incremental step than the changes which would be required to use websocket - which I think would fundamentally change the shape of the application.

[sfoster]

@gandalf3 See 4ef4364 for a front-end that should get you part-way there for this. Details in the new README for the directory I added.