that you did it by sending a mail to the mailing list. If there is anybody interested they will look at your code and give you suggestions. Speed up that process by adding a [http://en.wikipedia.org/wiki/List_of_FSF-approved_software_licenses GPL compatible license], preferably the latest GPL.
= Being a forger =
If you want to be a more permanent member of our community, you can also request to be a Forge developer (name may change) following [http://octave.sourceforge.net/developers.html].