Adding a guide for Simple Pi 3 set-up

[bmsleight]

Full installation guide, building from source. Including screenshots. All images right assigned as per LICENSE.txt

[bmsleight]

Please wait on pull - camera setting need changes and screenshot to be replaced. Weird flushing error appears to be resolved with different setting

[bmsleight]

Weird flushing error was user error. Ready for merge, should you wish to add this as a guide.

[scottlamb]

Hey, sorry I've been neglecting Moonfire PRs for a while.

I see this as a great, detailed opinionated guide to reproducing your setup. Thank you for writing it.

The thing I'm concerned about with merging into the versioned repo is that I think there's an implicit promise that everything there is at a consistent version of Moonfire. As we make changes to the software, this guide needs to be updated, and I don't have your particular hardware/software setup, so I'm not confident I can do that.

What would you say about putting it on the wiki? I've been thinking of the wiki as the place for stuff that's not necessarily versioned in the same way—which I see as including hardware and sysadmin advice, setup guides (that may lag in version), etc.

[bmsleight]

What would you say about putting it on the wiki?
Good idea - I start moving it across