Update readme.

Author: pmatseykanets

README.md

@@ -3,6 +3,7 @@
 [![Latest Version on Packagist](https://img.shields.io/packagist/v/pmatseykanets/laravel-scout-postgres.svg?style=flat-square)](https://packagist.org/packages/pmatseykanets/laravel-scout-postgres)
 [![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE.md)
 [![Build Status](https://img.shields.io/travis/pmatseykanets/laravel-scout-postgres/master.svg?style=flat-square)](https://travis-ci.org/pmatseykanets/laravel-scout-postgres)
+[![StyleCI](https://styleci.io/repos/67233265/shield)](https://styleci.io/repos/67233265)
 
 This package makes it easy to use native PostgreSQL Full Text Search capabilities with [Laravel Scout](http://laravel.com/docs/master/scout).