I came to Ruby by way of Cucumber. Cucumber placed an emphasis on writing tests that described the products behavior. Ideally Product Owners at the helm, authoring your requirements. No good tools were made available to provide documentation for the stakeholders. Out of necessity, I created an extension for YARD. I started to work on another extension for RSpec. I even started playing with integrating Bundler. Through this experimentation I realized how little our documentation tells us as stakeholders, testers, and developers.
Tests are documentation; but they are not in our documentaiton.
So I would like to help champion the continual war to encourage documentation by building tools that make better documentation from what has already been written. In that spirit I built an extension that generates better documentation with the comments made within methods themselves: annotated source code (docco style).