[ad_1] https://i.ytimg.com/vi/JzdY5tl1-TM/hqdefault.jpg This is a Ruby on Rails 5 Beginner’s Tutorial, part 9. Adding the Bootstrap 4 Gem. It follows closely guides.rubyonrails.org but spiffs it up and adds some bling to it in the end with Bootstrap 4 (this episode and the next 2). I run on Ubuntu. In case a Ruby/Rails person wonders: When…