Addition: README.md

A README.md file has been added to briefly describe the project.

Author: Dyrits

README.md

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+# Portfolio
+
+This repository is related to the course [[Portfolio Website Tutorial – Frontend Development with HTML, CSS, JavaScript](https://www.youtube.com/watch?v=xV7S8BhIeBo&t)] available on the freeCodeCamp's YouTube channel.
+
+## Description
+In this course, you will learn how to build a portfolio website using JavaScript, HTML, and CSS. This is a great project to improve you frontend development skills.
+
+✏️ MacLinz developed this course course. Check out his [channel](https://www.youtube.com/c/MacLinzUniversalChannel).
+
+## ⚠️ Important note
+ The current version of this repository can contain code which differs from the original code shown in the video. The code has been improved by [Dyrits](https://github.com/Dyrits), adding semantic elements, and a more optimized JavaScript script, but the visual rendering of the portfolio remains the same.
+
+The original code is available [here](https://github.com/Maclinz/JS_CSS_PortfolioProject/tree/1f1c0205c0b3a8caa623c96402775974f39ab5cb).