Dotty will symlink files and directories in the root your repos dotfiles/ directory, relative to ~. You can symlink stuff to sub directories of ~ by using the in+subdir directory naming convention.
dotfiles/.vim => ~/.vim
dotfiles/in+.ssh/config => ~/.ssh/config
dotfiles/in+a/in+b/c => ~/a/b/c
$ gem install dotty
$ dotty add dev [email protected]:MattesGroeger/dotfiles.git
$ dotty update dev
$ dotty bootstrap dev