README: Add homepage screenshot

Author: pH-7

README.md

@@ -2,26 +2,26 @@
 
 A simple and elegant client built for my Udemy course available at:
 
-
 ## Setting Up
 
 1. Make sure you have npm v6 or newer installed (by installing [NodeJS](https://nodejs.org/en/download)).
 2. Run `npm ci` to install all dependencies.
 3. `npm start` to start your React client application.
 
+## Preview
 
-## Author
+![Simple React Client - Homepage example](homepage-simple-react-client.png)
 
-I'm [Pierre-Henry Soria](https://ph7.me). A **super passionate** Belgian **software engineer** 🤗 And a true cheese 🧀 & chocolate 🍫 lover! 😋 You can reach me at *hi {[AT]} ph7 [{D0T}] me*
+## Author
 
-[![@phenrysay](https://img.shields.io/badge/Twitter-1DA1F2?style=for-the-badge&logo=twitter&logoColor=white)](https://twitter.com/phenrysay "Follow Me on Twitter") [![pH-7](https://img.shields.io/badge/GitHub-100000?style=for-the-badge&logo=github&logoColor=white)](https://github.com/pH-7 "Follow Me on GitHub")
+I'm [Pierre-Henry Soria](https://ph7.me). A **super passionate** Belgian **software engineer** 🤗 And a true cheese 🧀 & chocolate 🍫 lover! 😋 You can reach me at _hi {[AT]} ph7 [{D0T}] me_
 
+[![@phenrysay](https://img.shields.io/badge/Twitter-1DA1F2?style=for-the-badge&logo=twitter&logoColor=white)](https://twitter.com/phenrysay 'Follow Me on Twitter') [![pH-7](https://img.shields.io/badge/GitHub-100000?style=for-the-badge&logo=github&logoColor=white)](https://github.com/pH-7 'Follow Me on GitHub')
 
 ## Context
 
 This is the final and completed project of my [Udemy Course](https://www.udemy.com/user/pierresoria/), **Learn how to build a RESTful API with NodeJS, and a React client application**.
 
-
 ## License
 
 Distributed under [MIT](https://opensource.org/licenses/MIT) license 🎉