The author of this article has created a basic Rails 5 CRUD application to manage coffee roasts, with the added functionality of sending SMS notifications whenever a new roast is added using Twilio's SMS API. The author sets up a new Rails project, installs required gems, and configures Twilio for integration. They then add Twilio's functionality to their application by creating a service object that sends text messages. Finally, they integrate the SMS feature into their create method in the `CoffeeRoastsController`. The article concludes with instructions on how to run the Ruby app and test its functionality.