added badge (#488)

README.md

@@ -5,6 +5,8 @@ FMElfinderBundle
 
 ### Code Quality Assurance ###
 
+Proudly developed with [![PhpStorm](https://img.shields.io/badge/phpstorm-143?style=for-the-badge&logo=phpstorm&logoColor=black&color=black&labelColor=darkorchid)](https://www.jetbrains.com/phpstorm/)
+
 | Tests | Coverage| License | Version |
 |-------------|-----------------|-----------------|----------------|
 |[![Tests - Linux](https://github.com/helios-ag/FMElfinderBundle/actions/workflows/test.yaml/badge.svg)](https://github.com/helios-ag/FMElfinderBundle/actions/workflows/test.yaml)|[![Coverage Status](https://coveralls.io/repos/helios-ag/FMElfinderBundle/badge.svg?branch=master&service=github)](https://coveralls.io/github/helios-ag/FMElfinderBundle?branch=master)|[![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE)|[![Latest Stable Version](https://poser.pugx.org/helios-ag/fm-elfinder-bundle/v/stable.svg)](https://packagist.org/packages/helios-ag/fm-elfinder-bundle)|