Revert "new rails app"

This reverts commit 6967b10cebaf75a359cf0d862a9b14475521ab14.
rails_apps_composer: initial commit
rails_apps_composer: Gemfile
rails_apps_composer: create database
rails_apps_composer: generators
rails_apps_composer: testing framework
rails_apps_composer: set email accounts
rails_apps_composer: models
rails_apps_composer: controllers
rails_apps_composer: views
rails_apps_composer: routes
rails_apps_composer: front-end framework
rails_apps_composer: add README files
rails_apps_composer: set up database
rails_apps_composer: extras
change db seed