Install Ruby 2.3.0 from https://www.ruby-lang.org/en/downloads/ or via RVM (https://rvm.io/).
yo and this generator globally.
npm install -g yo generator-ruby-starter-kit
Navigate to the directory you'd like to use for your project, then run
Run the app entry point script:
Run the guard dev env tool:
It will run rubocop on start, will run rubocop inspections on changed files and will re-run all RSpecs and rubocop inspections if you hit Enter in guard window.