Check out Version 2 of my gem GenericApp https://github.com/jhsu802701/generic_app) for creating a new Rails app.
No other Rails template app is this comprehensive.
created the template app used as the basis for GenericApp with my Rails
From Scratch protocol athttps://github.com/jhsu802701/rails_from_scratch_rails5
. Rails From Scratch was inspired by Rails Tutorial but has much shorter chapters, uses the Devise gem to provide authentication, uses Capybara for integration tests, and provides scripts for automating many
routine tasks. Rails From Scratch also doubles as a cheat sheet for possible features to add to legacy projects and for many routine tasks.