Possible solution to the hard-coded issues

[stephenyeargin]

The display configs are also hard-coded

https://github.com/websages/raspi/blob/master/sd_build/post_dd_config#L16-L41

I'm starting to think the best approach may be coming up with a template distribution of these files (where the final version is .gitignored) so it looks like:

- [screens]
-- [default]
--- README.md (says to copy the default folder to create a new deployment)
--- display.txt
--- wifi.txt
-- [some-screen-slug-1]
--- display.txt
--- wifi.txt
-- [some-screen-slug-2]
--- display.txt
--- wifi.txt

And then the mkraspi command could take two arguments (third is optional)

$ ./mkraspi
Usage: mkraspi <ip address> <screen-slug> [<ssh key path>]