The Meteor Devshop talk delivered on 31 Aug, 20014 where Phil started with an overview of the Respondly UI. This then led into exploring the "UI Harness" a new open-source tool that Respondly created and uses to isolate, test and document modular UI with Meteor.
https://respond.ly
http://uiharness.com
Video of talk at: https://www.youtube.com/watch?v=ujkXaxn16mQ&feature=youtu.be&t=15m49s