Added Vundle clean to remove bundles removed from vimrc

plugins/vundle/vundle.plugin.zsh

@@ -16,8 +16,12 @@ function vundle () {
   vim -c "execute \"BundleInstall\" | q | q"
 }
 
-
 function vundle-update () {
   vundle-init
   vim -c "execute \"BundleInstall!\" | q | q"
 }
+
+function vundle-clean () {
+  vundle-init
+  vim -c "execute \"BundleClean!\" | q | q"
+}