Whoops, this was supposed to be in the last commit!

plugins/github/github.plugin.zsh

+# hub alias from defunkt
+# https://github.com/defunkt/hub
+if which hub > /dev/null; then
+    eval $(hub alias -s zsh)
+fi
+
 # add github completion function to path
 fpath=($ZSH/plugins/github $fpath)
 autoload -U compinit