You can clone with
HTTPS or Subversion.
Use Rails 3's Generator format
This will stop the problem when the plugin actually tries to copy the
helper files upon initializing on read-only disk image.
You'll have to run `rails generate ujs_sort_helper:install` to get those
static assets copied to your public directory.
Update plugin to support Rails 3 and adding the class to <th> instead
Renamed to ujs_sort_helper, added jQuery version