Link to Packagist on README

Author: midnight-wonderer

README.md

@@ -1,10 +1,18 @@
 # `SlimeSystems\ObjectId`
 
-A feature-packed ObjectId implementation for PHP.  
-[![PHP Composer](https://github.com/slime-systems/php-object-id/actions/workflows/php.yml/badge.svg)](https://github.com/slime-systems/php-object-id/actions/workflows/php.yml)  
+A feature-packed ObjectId implementation for PHP.
+
+[![PHP Composer](https://github.com/slime-systems/php-object-id/actions/workflows/php.yml/badge.svg)](https://github.com/slime-systems/php-object-id/actions/workflows/php.yml)
+[![Packagist Version](https://img.shields.io/packagist/v/slime-systems/object-id)](https://packagist.org/packages/slime-systems/object-id)  
 
 ---
 
+## Installation
+
+~~~bash
+composer require slime-systems/object-id
+~~~
+
 ## Usage Guide
 
 `SlimeSystems\ObjectId` is a BSON-compatible identifier similar to MongoDB's `ObjectId`.