Update README.md

Added Team Capabilities post to most recent

README.md

@@ -75,6 +75,7 @@ These are the 40-plus most recent posts, in reverse chronological order:
 + [The Art and Science of Writing Sprint Goals](https://medium.com/agile-outside-the-box/the-art-and-science-of-writing-sprint-goals-b6a042c270d)
 + [A Praactioner's Brief Guide to Scrum](https://medium.com/agile-outside-the-box/a-practitioners-guide-to-scrum-14054181d9c7)
 + [What the DORA Metrics Can and Cannot Tell Us About Organizational Performance](https://medium.com/agile-outside-the-box/what-the-dora-metrics-can-and-cannot-tell-us-about-organizational-performance-60a1f84d5219)
++ [Understanding Team Capabilities](https://medium.com/p/be265163204f)
 + [Facilitation: The Fine Art of Noticing](https://medium.com/agile-outside-the-box/facilitation-the-fine-art-of-noticing-d89af9fcb4b0) 
 + [Dependency Management Techniques: Part II](https://medium.com/agile-outside-the-box/dependency-management-techniques-part-ii-3884e3d83d52) 
 + [Velocity is a House Built of Straw](https://medium.com/agile-outside-the-box/velocity-is-a-house-built-of-straw-aa6c21659d69)