Adding git-extras to osx homebrew, need to add install steps for ubuntu install.
Including "z" as as submodule.
Updating z to latest, which allows me to fix the $PROMPT_COMMAND hack.
Adding nave.
fixed a typo.  added some keybindings for search and history.
Merge branch 'develop' of https://github.com/jcowhigjr/dotfiles into develop

* 'develop' of https://github.com/jcowhigjr/dotfiles:
  typo in keybindings

Conflicts:
	shell/zsh/keybindings.zsh