Added Codacy Badge

Author: PDowney

README.md

@@ -5,6 +5,7 @@ A WordPress plugin that exports your entire site, including files and database,
 [![WordPress Compatible](https://img.shields.io/badge/WordPress-5.8%2B-blue.svg)](https://wordpress.org/)
 [![PHP Compatible](https://img.shields.io/badge/PHP-7.4%2B-purple.svg)](https://www.php.net/)
 [![License](https://img.shields.io/badge/License-GPL%20v3-green.svg)](https://www.gnu.org/licenses/gpl-3.0.html)
+[![Codacy Badge](https://app.codacy.com/project/badge/Grade/d81efac1703c4d3b8b998d2587cd696b)](https://app.codacy.com/gh/EngineScript/EngineScript-Simple-Site-Exporter/dashboard?utm_source=gh&utm_medium=referral&utm_content=&utm_campaign=Badge_grade)
 
 ## Description