Script to add existing vim plugins as git submodules so that you can synchronise them as shown at: http://vimcasts.org/episodes/synchronizing-plugins-with-git-submodules-and-pathogen/

vim-submodules.py

import os
import subprocess

HOME = "/home/kaushiksk/" # Change this to your home folder
os.chdir(HOME + ".vim/")
bundle_folder = "./bundle/"
modules = os.listdir(bundle_folder)

for module in modules:
    os.chdir(bundle_folder + module)
    try:
        out = subprocess.check_output(["git", "remote","-v"])
        os.chdir(HOME + ".vim/")
        subprocess.call(["git", "submodule", "add", out.split()[1], bundle_folder + module ])
        print "Done adding ", module

    except:
        print "Leaving ", module, ". Not a git repository"
        os.chdir(HOME + ".vim/")