.extra: Add direnv initialize
Update README.md
Brewfile: Add ctags for vim
Move zsh completions to oh-my-zsh
.osx: Update `iOS Simulator.app` path
.functions: Make `mkd` `cd` into the last directory in the list
Brewfile: Use `--with-iri` for `wget`
.osx: Make Yosemite Safari more useful
.osx: Don’t send Safari search queries to Apple
.aliases: Update `npm` the right way
.osx: Use the system-native print preview dialog in Chrome
.osx: Remove a few commands that no longer have any effect in Yosemite
.osx: Disable transparency in the menu bar and elsewhere on Yosemite
.functions: Improve `getcertnames`