Fixed vim and zsh

zsh/tools/zim_update

@@ -0,0 +1,11 @@
+#
+# zim_update - update the zim repository
+#
+
+cd ${ZDOTDIR:-${HOME}/.zim}
+
+# this is the cleanest way I know how to update a repository
+git remote update -p
+git merge --ff-only @\{u\}
+# and update the submodules
+git submodule update --init --recursive