Use $OSTYPE instead of uname to speed things up

The $OSTYPE variable is set at ZSH compile time and can be safely used
to determine the OS of the system. e.g. darwin (os x)
Support dynamically defined Vagrant machines
Merge pull request #2744 from docwhat/ostype-not-uname

Use $OSTYPE instead of uname to speed things up
Merge pull request #2811 from stucki/multiple-vagrant-machines

Support dynamically defined Vagrant machines
Add 'chris' theme
Update zsh prompt
Add custom dir to repo
Remove Climate aliases
Remove spec alias
Add irc alias for weechat-curses
Remove before and after context on grep alias
Add gap alias, remove grep alias
Add custom scripts to repository
Rename scripts to have correct load order
Remove unnecessary init scripts
Change LSCOLORS to better match Thayer color scheme
Move path stuff to oh-my-zsh config
Add node binaries to path
Remove custom LS colors for zsh
Remove custom Square stuff