Fixed vim and zsh

zsh/modules/git/functions/git-root

@@ -0,0 +1,9 @@
+local root="$(command git rev-parse --show-toplevel 2> /dev/null)"
+
+if [[ -n "${root}" ]]; then
+  print "${root}"
+  return 0
+else
+  print "${0}: not a repository work tree: ${PWD}" >&2
+  return 1
+fi