together in the same relative location, and only the
superproject's URL needs to be provided: git-submodule will correctly
locate the submodule using the relative URL in .gitmodules.
++
+The submodule will be added with "git add --force <path>". I.e. git
+doesn't care if the new path is in a `gitignore`. Your invocation of
+"git submodule add" is considered enough to override it.
status::
Show the status of the submodules. This will print the SHA-1 of the