start out with thoughtbots version

zsh/configs/post/path.zsh

@@ -0,0 +1,12 @@
+# ensure dotfiles bin directory is loaded first
+PATH="$HOME/.bin:/usr/local/sbin:$PATH"
+
+# load rbenv if available
+if command -v rbenv >/dev/null; then
+  eval "$(rbenv init - --no-rehash)"
+fi
+
+# mkdir .git/safe in the root of repositories you trust
+PATH=".git/safe/../../bin:$PATH"
+
+export -U PATH