Add submodule plugins/grunt-zsh-completion @9d194d9

* plugins/grunt-zsh-completion 0000000...9d194d9 (15):
  > Add installation for oh-my-zsh in README
theme improvements: django settings module, colors
zsh: grunt plugin
zsh: setup tmuxifier
Manually merge update from oh-my-zsh for _grunt setup
gsma: handle empty .gitmodules
Spice up term title handling (esp. with tmux)
Add submodule plugins/grunt @9d194d9

* plugins/grunt 0000000...9d194d9 (15):
  > Add installation for oh-my-zsh in README