Add camera input selection and no camera mode.

[Architeuthis-Flux]

It's pretty early to be giving you a hard time about features, but I have a request for when you start working on this more.

Currently, the app defaults to the built-in Facetime HD camera on my Macbook pro and I'd like to use an external webcam for this (I have a downward facing camera basically built into my workbench that would be perfect for this.)

I'll look into a fix and maybe submit a PR, but I need to work on my React skillz.

I'm also going to work on a cartoonified Jumperless in svg format for people who don't want to mess with the webcam thing at all.

[nilclass]

Great suggestion, I'll look into it once I'm back to working on the webcam integration

[nilclass]

@Architeuthis-Flux I've pushed some changes to make the camera selectable. Does it work for you?

You should see something like this:

Not pretty, but hopefully functional.

[Architeuthis-Flux]

Yeah it works great, thanks!