📝 (README) update the contributing section

Author: Spoutnik97

README.md

@@ -155,7 +155,10 @@ All contributions are welcomed, that might be either adding new features, doing
 1. Fork the project & clone locally. Follow the initial setup here.
 2. Create a branch, naming it either a feature or bug: git checkout -b feature/that-new-feature or bug/fixing-that-bug
 3. Code and commit your changes. Write a good commit message. Best would be to use git [commitizen](https://github.com/commitizen/cz-cli)
-4. Test your changes in the [example repository](https://github.com/bamlab/react-native-image-header-scroll-view-example)
+4. Test your changes in the example
+  - launch the Expo project: `cd example && yarn start && cd ..`
+  - compile typescript to lib folder : `yarn tsc --noEmit``
+  - watch your feature/fix in your simulator
 5. Push to the branch: git push origin feature/that-new-feature
 6. Create a pull request for your branch 🎉