It's been a while... I know... But now, the GRoboduino Library is uploaded (v1) and you can find it along with the documentation and the rest of GRoboduino files in the list on the right!
Also the file hoster has changed, the files are no longer on rapidshare, they have been uploaded on google sites.
Another thing you should know is that the H-Bridge in the schematics and BOM has changed from SN754410 to L293DNE, as after thorough research it came up that the diodes in SN754410 are meant to be ESD protection ones, not clamp diodes.