How do I add a submodule to a sub-directory?

Question

I have a git repo in ~/.janus/ with a bunch of submodules in it. I want to add a submodule in ~/.janus/snipmate-snippets/snippets/, but when I run

Answer 1

You go into ~/.janus and run:

git submodule add  snipmate-snippets/snippets/

If you need more information about submodules (or git in general) ProGit is pretty useful.