No. I'm looking for exactly something like this. I'm glad it's a "bootstrap", not yet another framework. I want to try React Native but have been having trouble getting started. And I would like something with a little bit of polish.
For comparison's sake, check out https://github.com/bartonhammond/snowflake - it's quite similar to Pepperoni, and at this moment a bit more mature.
In the long term we want to make Pepperoni more comprehensive, documented and stable. We have some different opinions compared to Snowflake's - that's why we are building our own. A topic worth a blog post, though, too long to expand here and now.