Tmux

Install tmux and the tmux packet manager tpm. Then create symlink:

# install tmux first!
git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm

# symlink tmux.conf into place
ln -s ~/.dotfiles/tmux/tmux.conf ~/.config/tmux/tmux.conf

Fish

Symlink the dots:

ln -s ~/.dotfiles/fish/ ~/.config/