adding GIF to README

Author: rodriigovieira

example/README.md

@@ -1,7 +1,10 @@
 # Example Project
 
+![Gravação de Tela 2020-11-04 às 03 46 15](https://user-images.githubusercontent.com/7014073/98164480-200b4e80-1ec3-11eb-9c4d-45a3dd4b3683.gif)
+
 This project contains a complete example of the `react-native-navigation-drawer-extension` package.
 
 The entry point is at `index.js`, replacing the default RN content with the listener from `react-native-navigation` to start the app.
 
-The pages and components are in the `src` folder.
+The pages and components are in the `src` folder.
+