How to contribute to the rightscale_tools gem?

I have an update I'd like to make to the rightscale_tools gem - is there a repository for that gem? I just see it added as a binary here.

The update I'd like to make is the scan_for_attachments in lib/rightscale_tools/platform/linux.rb needs to scan more than just host0 - it should scan all hosts in /sys/class/scsi_host/
