Add docs giving an overview of how about:home snippets work.

I feel like the first part of the sentence and the second part of the sentence are independent clauses, which is why I had it there. 

Well okay, rather, that's the grammar rule that I just looked up that seems to apply. In actuality, when I say this out loud, I'd give a significant pause between "JavaScript" and "and", which seemed to hint at a comma there.

Without it you get "and JavaScript and" which just looks weird. I'd prefer to keep this comma.

I LOVE YOU COMMA