Update README.md

Author: gabriel-hahn

README.md

@@ -45,6 +45,11 @@ To run tests with coverage:
 $ yarn test --coverage
 ```
 
+## Demo
+<p align="center">
+    <img src="https://media.giphy.com/media/KxscsDHNULQWXzmEQ7/giphy.gif">
+</p>
+
 ## Contributing
 
 Please read [CONTRIBUTING.md](https://gist.github.com/PurpleBooth/b24679402957c63ec426) for details on our code of conduct, and the process for submitting pull requests to us.