In this course, we gave one of Ruby's most respected and loved programmers, Aaron Patterson, the task of writing a Rails app that queries GitHub and returns an activity score for any user. You'll see a master at work. Although this isn't a step-by-step tutorial, you'll see the following concepts used: Writing fast test cases, Powerful ways to use IRB, Git workflow within Vim, Working with a JSON API, Using ActiveRecord, Rails 3 development and testing workflow.