docs: add licence tag

Author: Avivbens

README.md

@@ -12,6 +12,7 @@ installs apps, configures your dev system, and personalizes your working station
 [![Latest Version Downloads](https://img.shields.io/github/downloads/avivbens/shell-config/latest/total?label=Latest%20Version%20Downloads&color=green)](https://github.com/avivbens/shell-config/releases/latest)
 [![Latest Version](https://img.shields.io/github/v/release/avivbens/shell-config?label=Latest%20Version&color=green)](https://github.com/avivbens/shell-config/releases/latest)
 [![Total Downloads](https://img.shields.io/github/downloads/avivbens/shell-config/total?label=Total%20Downloads&color=blue)](https://github.com/avivbens/shell-config/releases)
+![License](https://img.shields.io/badge/License-MIT-green.svg)
 
 [!["Buy Me A Coffee"](https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png)](https://www.buymeacoffee.com/kcao7snkgx)