Submodules

Add submodule into sub-directory

git submodule add <git@github ...> snipmate-snippets/snippets/

SO-post

Submodules to be set to what they were

git submodule init && git submodule update

To recursively setup submodules

git submodule update --init --recursive

Quite useful when your submodules have submodules, which in turn can have their own submodules.

To Remove submodule

git rm <path-to-submodule>