Add readme and contributing

Author: islam

.gitattributes

@@ -7,3 +7,4 @@
 /phpstan.neon export-ignore
 /phpunit.xml.dist export-ignore
 /psalm.xml export-ignore
+/CONTRIBUTING.md export-ignore

CONTRIBUTING.md

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+# How to Contribute
+
+## Pull Requests
+
+1. Fork the Monobank php client repository
+2. Create a new branch for each feature or improvement
+3. Send a pull request from each feature branch to the **main** branch

README.md

@@ -1 +1,16 @@
-### Monobank PHP Client
+# Monobank PHP Client
+
+<a href="https://packagist.org/packages/khandurdyiev/monobank-php-client"><img src="https://img.shields.io/packagist/dt/khandurdyiev/monobank-php-client" alt="Total Downloads"></a>
+<a href="https://packagist.org/packages/khandurdyiev/monobank-php-client"><img src="https://img.shields.io/packagist/v/khandurdyiev/monobank-php-client" alt="Latest Stable Version"></a>
+<a href="https://packagist.org/packages/khandurdyiev/monobank-php-client"><img src="https://img.shields.io/packagist/l/khandurdyiev/monobank-php-client" alt="License"></a>
+<a href="https://packagist.org/packages/khandurdyiev/monobank-php-client"><img src="https://img.shields.io/packagist/php-v/khandurdyiev/monobank-php-client" alt="PHP Version"></a>
+
+Monobank php client helps you to use [Monobank API](https://api.monobank.ua/docs/) easily.
+
+## Installation
+
+It's recommended that you use [Composer](https://getcomposer.org/) to install Monobank php client.
+
+```bash
+$ composer require khandurdyiev/monobank-php-client:^1.0
+```