Added style ci badge to readme

Author: =

README.md

@@ -2,6 +2,7 @@
 
 <p align="center">
 <a href="https://github.com/joelbutcher/laravel-archivable/actions"><img src="https://github.com/joelbutcher/laravel-archivable/workflows/tests/badge.svg" alt="Build Status"></a>
+<a href="https://github.styleci.io/repos/301993606"><img src="https://github.styleci.io/repos/301993606/shield?style=flat" alt="""StyleCI"></a>
 <a href="https://packagist.org/packages/joelbutcher/laravel-archivable"><img src="https://img.shields.io/packagist/dt/joelbutcher/laravel-archivable" alt="Total Downloads"></a>
 <a href="https://packagist.org/packages/joelbutcher/laravel-archivable"><img src="https://img.shields.io/packagist/v/joelbutcher/laravel-archivable" alt="Latest Stable Version"></a>
 <a href="https://packagist.org/packages/joelbutcher/laravel-archivable"><img src="https://img.shields.io/packagist/l/joelbutcher/laravel-archivable" alt="License"></a>