Change zsh option correct_all to new name correct
Move path setup from zshrc to zshenv
Add git alias to review commits to push
Change check.sh to pass its own arguments to diff
Add new st2 packages

- Add Inc-Dec st2 package
- Add st2 Live-Reload to update md preview automatically
Stop using typesafe ppa
Add git_update function for safely pulling changes

git_update function uses `git fetch` and `git rebase -p` as recommended at
https://coderwall.com/p/jiswdq
Fix sublime-handler setup
Update st2 key bindings and packages