Bearonrails is the base Rails application generator.(For Rails 4.2+)
First install the bearonrails gem:
$ gem install bearonrails
Then run:
$ bearonrails project_name
For New Relic, edit .env, set New Relic License key to NEW_RELIC_LICENSE_KEY
NEW_RELIC_APP_NAME=change-this-to-your-app-name
NEW_RELIC_LICENSE_KEY=change-this-to-your-new-relic-license-key
For code style, edit .rubocop.yml to customize coding style rules. See sample(https://github.com/bbatsov/rubocop/blob/master/config/default.yml).
You could integrate your editor with rubocop, see rubocop editor-integration.
Use .env to manage environment varibales. And load environment varibales set in .env file when Rails Application start.
See config/application.rb
# Added this line
Dotenv.load