Update README.md

Author: patinthehat

README.md

@@ -4,6 +4,7 @@
     <img src="https://static.permafrost.dev/images/php-code-search/php-code-search-logo.png" alt="php-code-search logo" height="200" style="block">
     <br><br>
     <img src="https://img.shields.io/github/v/release/permafrost-dev/php-code-search.svg?sort=semver&logo=github&" alt="Package Version">
+    <img src="https://img.shields.io/packagist/dt/permafrost-dev/php-code-search?logo=packagist&logoColor=%23fff" alt="Downloads">
     <img src="https://img.shields.io/github/license/permafrost-dev/php-code-search.svg?logo=opensourceinitiative&" alt="license">
     <img src="https://github.com/permafrost-dev/php-code-search/actions/workflows/run-tests.yml/badge.svg?branch=main" alt="Test Run Status">
     <img src="https://codecov.io/gh/permafrost-dev/php-code-search/branch/main/graph/badge.svg" alt="code coverage">