Ho to contribute?

I recently really needed a routing feature for couchbase-elasticsearch-connector 4.0 and just added few lines to accomplish the my requirement.
github: https://github.com/mashhur/couchbase-elasticsearch-connector
So, as the feature working expectedly I would like to contribute if possible (at least have discussion about connector).
If there guidelines for contribution please notice me.

Hi Mashhur,

For bug reports and feature requests, file an issue on Couchbase Jira in the CBES project. Anyone can request a Jira account by following the “Jira Administrators” link below the login form.

For code contributions, a GitHub pull request is a fine way to get started.

We’ll add a CONTRIBUTING guide to the repo in the next few days.