Well, it wasn't clear to me whether it was tested with the MRI. If that works, then sure.

I'd like to somehow have an "optimized" Heroku config that's easy to set up, because I suspect a lot of people will want to use Heroku. The only actual requirement to make it work may well be the git -> https change in Gemfile. But there are these other choices that may have a "right" non-default answer if you're not an expert. Maybe it should all be encapsulated in setup.rb.