Adjust CodeIgniter code, only bid if you're CI expert

The library at: [login to view URL] supports multi-languages for CodeIgniter, I am out of time and need somebody to modify the library a little bit so that it allows removing the language code from url for default language. So if default language is "en", url should be http://localhost/ instead of http://localhost/en/ It should do so just for the default language and for all urls, for other languages, it should show the language code in url.