adds screenshot to the readme

Author: a7ul

react-nodegui/react-router-example/README.md

@@ -2,6 +2,8 @@
 
 This example shows how to use react-router v5 with react-nodegui. Its uses MemoryRouter (the router which is used in React Native as well). This is a basic example and contains basic routing. Check `routes.tsx` for more details.
 
+<img alt="logo" src="https://github.com/nodegui/examples/raw/master/react-nodegui/react-router-example/assets/routes.gif" height="800" />
+
 **Clone and run for a quick way to see React NodeGui and react router in action.**
 
 ## To Use