Implement updateable documentation

[spiralofhope]

I have a lot of snippets I've kept in _DevPad which would be worth sharing, perhaps to be tidied into basic, intermediate and advanced tutorials.

There is already a default set of documents created for fresh users.

But what I particularly want is to have a method of keeping such things up-to-date. If kept in their own .lua file(s), they could be separate from the user's stuff. I'm at a loss as to how to begin such a project, but it would be well worth it. I don't want to have examples stranded outside of the game; I want them within it, where they can be tried live and the user can experiment.