Add Gemfile
Add Gemfile.lock
Add app/views/products/show.html.erb
Add app/views/shared/_stripe_checkout_button.html.erb
Add config/routes.rb
Add app/assets/javascripts/payments.js.coffee
Add app/assets/stylesheets/payments.css.scss
Add app/controllers/payments_controller.rb
Add app/helpers/payments_helper.rb
Add app/views/payments/
Add spec/controllers/payments_controller_spec.rb
Add spec/helpers/payments_helper_spec.rb