I built this app following this tutorial, it is a Test Driven Development application and in the application you can sign up and it will send you an email to activate your account, once you activate your account youre able to log in and see your news feed as well as comment and follow other people who have the application, this application is a scaled down version of twitter. You can post images and the images are stored through amazon web services and not stored on the applications database. This application is a work in progress so I can learn more Rails and add more features to the application as well as some front end technologies such as React.
This is the sample application for Ruby on Rails Tutorial: Learn Web Development with Rails by Michael Hartl.
All source code in the Ruby on Rails Tutorial is available jointly under the MIT License and the Beerware License. See LICENSE.md for details.