coverage badge added to README.md

Author: biscolab

README.md

@@ -6,7 +6,7 @@ Available reCAPTCHA versions:
 * v2 Checkbox
 * v3
 
-[![Build Status](https://travis-ci.org/biscolab/laravel-recaptcha.svg?branch=master)](https://travis-ci.org/biscolab/laravel-recaptcha) [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/biscolab/laravel-recaptcha/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/biscolab/laravel-recaptcha/?branch=master) [![Packagist version](https://img.shields.io/packagist/v/biscolab/laravel-recaptcha.svg#img-thumbnail)](https://packagist.org/packages/biscolab/laravel-recaptcha)
+[![Build Status](https://travis-ci.org/biscolab/laravel-recaptcha.svg?branch=master)](https://travis-ci.org/biscolab/laravel-recaptcha) [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/biscolab/laravel-recaptcha/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/biscolab/laravel-recaptcha/?branch=master) [![Code Coverage](https://scrutinizer-ci.com/g/biscolab/laravel-recaptcha/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/biscolab/laravel-recaptcha/?branch=master) [![Packagist version](https://img.shields.io/packagist/v/biscolab/laravel-recaptcha.svg#img-thumbnail)](https://packagist.org/packages/biscolab/laravel-recaptcha)
 
 ## System requirements
 | Package version | PHP version | Laravel version |