This README would normally document whatever steps are necessary to get the application up and running.
Things you may want to cover:
Ruby version ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]
System dependencies
Configuration
Database creation
Database initialization
How to run the test suite
Services (job queues, cache servers, search engines, etc.)
Deployment instructions
...