Rooibos is an independent open-source project maintained exclusively by volunteers.
You might want to help! Get in touch via the slack group or raise issues.
https://github.com/rokucommunity/rooibos-roku-sample
https://github.com/rokucommunity/rooibos/blob/master/docs/index.md#getting-started
Yes, it's been used in production by quite a few respectable companies. There are 10,000's of tests in production.
We at RokuCommunity love rooibos, and regularly keep it up to date.