Add Scrutinizer and Packagist badges

Author: henriquemoody

README.md

@@ -1,5 +1,10 @@
 # Respect\Stringifier
 
 [![Build Status](https://img.shields.io/travis/Respect/Stringifier/master.svg?style=flat-square)](http://travis-ci.org/Respect/Stringifier)
+[![Scrutinizer Code Quality](https://img.shields.io/scrutinizer/g/Respect/Stringifier/master.svg?style=flat-square)](https://scrutinizer-ci.com/g/Respect/Stringifier/?branch=master)
+[![Code Coverage](https://img.shields.io/scrutinizer/coverage/g/Respect/Stringifier/master.svg?style=flat-square)](https://scrutinizer-ci.com/g/Respect/Stringifier/?branch=master)
+[![Latest Stable Version](https://img.shields.io/packagist/v/respect/stringifier.svg?style=flat-square)](https://packagist.org/packages/respect/stringifier)
+[![Total Downloads](https://img.shields.io/packagist/dt/respect/stringifier.svg?style=flat-square)](https://packagist.org/packages/respect/stringifier)
+[![License](https://img.shields.io/packagist/l/respect/stringifier.svg?style=flat-square)](https://packagist.org/packages/respect/stringifier)
 
 Converts any PHP value into a string.