Update README.md

Author: rwieruch

README.md

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 [![Build Status](https://travis-ci.org/taming-the-state-in-react/react-snake.svg?branch=master)](https://travis-ci.org/taming-the-state-in-react/react-snake) [![Slack](https://slack-the-road-to-learn-react.wieruch.com/badge.svg)](https://slack-the-road-to-learn-react.wieruch.com/) [![Greenkeeper badge](https://badges.greenkeeper.io/taming-the-state-in-react/react-snake.svg)](https://greenkeeper.io/)
 
-* Found in [Taming the State in React](https://roadtoreact.com/course-details?courseId=TAMING_THE_STATE)
 * [Live](https://evening-everglades-29185.herokuapp.com/)
 
 ![sep-02-2017 17-09-49](https://user-images.githubusercontent.com/2479967/29996581-94a6c5a2-9001-11e7-85d6-3e60828a9deb.gif)