Hi,
happy to hear your interest on the project. We welcome any kind of contribution. You want to contribute to the project then maybe it is better to pick any issue (or labelled easy or good first issue). We will help you on that.
You can go through the contribution guidelines and setup workflow first and play with testcases written to understand the API.
Just want to inform you: SciRuby was not able to register for this year GSoC, so don't expect it's participation in this year GSoC.
Thanks and regards,
Shekhar