Update README.md

Author: simonharrer

README.md

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+[![Remote Mob Programming](http://img.youtube.com/vi/nr9QA753L5Y/0.jpg)](http://www.youtube.com/watch?v=nr9QA753L5Y "Remote Mob Programming")
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 ## Here's how we do Remote Mob Programming
 
 Below, we summarize the essentials of successful Remote Mob Programming as we understand them.