updates your vim bundles when using git

update.rb

#!/usr/bin/ruby
require 'fileutils'

DROPBOX_DIR = File.expand_path("~/Dropbox/config_files")
VIM_BUNDLES_DIR = DROPBOX_DIR + "/.vim/bundle"

files = Dir["#{VIM_BUNDLES_DIR}/*"]
files.each do |file|
  unless !File.directory?("#{file}/.git")
    FileUtils.cd(file)
    system("git pull origin master")
    FileUtils.cd("..")
  end
end