Remove Coffee Script from Rails 5

Add the option -skip-coffee to rails new command

If you have already created the project

1. Remove gem 'coffee-rails' from Gemfile
2. Add config.generators.javascript_engine = :js to application.rb

       If you have already created the view files, 

1. Change extension of .js.coffee files to .js
2. Clear the tmp cache with rake tmp:cache:clear