Question

Git cannot add a completely empty director, how to add empty directory to git?

Solution

Take path/to/empty-directory as an example,

$ touch path/to/empty-directory/.gitkeep
$ git add path/to/empty-directory/.gitkeep

path/to/empty-directory will be reserved by git.

If you wan't to ignore the directory, for example it's used to generate build files, add .gitkeep before add directory to .gitignore.

http://stackoverflow.com/questions/7229885/what-are-the-differences-between-gitignore-and-gitkeep