I split the SASS file, so the developer can decide which fonts and styles he really needs.
Our repository: http://fontfacekit.github.com/robotodraft
Google Web Fonts: http://fonts.googleapis.com/css?family=RobotoDraft:regular,bold,italic,thin,light,bolditalic,black,medium&lang=en
Contact @gustavohenke if you want to maintain your own font-face in this repository.