Update readme

Author: Bellangelo

README.md

@@ -1,3 +1,24 @@
 # Type Coverage Updater
-A helper script that helps you to auto-update the type coverage of this extension [Require Minimal Type Coverage
-](https://github.com/TomasVotruba/type-coverage)
+
+## Overview
+Type Coverage Updater is a helper script designed to automatically update the type coverage 
+of your PHP project, ensuring your codebase maintains a specified level of type safety. 
+It works as an extension of [Tomas Votruba's type-coverage](https://github.com/TomasVotruba/type-coverage),
+automating the process of checking and updating the type coverage 
+percentage in your project's configuration.
+
+## Installation
+Install the package via Composer:
+
+```bash
+composer require bellangelo/type-coverage-updater
+```
+
+## Usage
+Run the updater script to automatically check and update the type coverage:
+
+```bash
+vendor/bin/type-coverage-updater
+```
+This script will analyze your project, update the type coverage percentage in 
+your configuration file, and ensure your codebase meets the specified type safety standards.