Adds a process for adding a plugin.

[StevenDufresne]

Here's what I'm thinking for the initial submission process.

[jordesign]

Looks good to me 👍

[StevenDufresne]

Process sounds good to me, couple of grammatical suggestions.

Are these requirements based on prior art?

It depends on what you consider art. :)

I've had some informal conversations with contributors but it's not taken from anywhere specifically and likely to evolve.