Update README

README.md

@@ -11,14 +11,13 @@ haveibeenpwned-library
 
 Integrate HaveIBeenPwned API with your projects.
 
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+If you like this package, pay me a beer (or a coffee)
+[![paypal.me](https://img.shields.io/badge/paypal.me-webeweb-0070ba.svg?style=flat-square&logo=paypal)](https://www.paypal.me/webeweb)
 
 ## Compatibility
 
 [![PHP](https://img.shields.io/packagist/php-v/webeweb/haveibeenpwned-library.svg?style=flat-square)](http://php.net)
 
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-
 ## Installation
 
 Open a command console, enter your project directory and execute the following
@@ -32,14 +31,10 @@ This command requires you to have Composer installed globally, as explained in
 the [installation chapter](https://getcomposer.org/doc/00-intro.md) of the
 Composer documentation.
 
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-
 ## Usage
 
 Read the [documentation](doc/index.md).
 
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-
 ## Testing
 
 To test the package, is better to clone this repository on your computer.
@@ -61,9 +56,12 @@ $ vendor/bin/phpunit
 > IMPORTANT NOTICE: To test the package with your API key, edit the
 > `tests/Provider/APIv3ProviderTest.php` file to find and replace "YOUR_API_KEY".
 
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-
 ## License
 
 `haveibeenpwned-library` is released under the MIT License. See the bundled [LICENSE](LICENSE)
 file for details.
+
+## Donate
+
+If you like this work, please consider donating at
+[![paypal.me](https://img.shields.io/badge/paypal.me-webeweb-0070ba.svg?style=flat-square&logo=paypal)](https://www.paypal.me/webeweb)