Added code coverage and code quality badges

Author: khelle

README.md

@@ -1,6 +1,8 @@
 # Dazzle Throwable Hierarchy
 
 [![Build Status](https://travis-ci.org/dazzle-php/throwable.svg)](https://travis-ci.org/dazzle-php/throwable)
+[![Code Coverage](https://scrutinizer-ci.com/g/dazzle-php/throwable/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/dazzle-php/throwable/?branch=master)
+[![Code Quality](https://scrutinizer-ci.com/g/dazzle-php/throwable/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/dazzle-php/throwable/?branch=master)
 [![Total Downloads](https://poser.pugx.org/dazzle-php/throwable/downloads)](https://packagist.org/packages/dazzle-php/throwable) 
 [![Latest Stable Version](https://poser.pugx.org/dazzle-php/throwable/v/stable)](https://packagist.org/packages/dazzle-php/throwable) 
 [![Latest Unstable Version](https://poser.pugx.org/dazzle-php/throwable/v/unstable)](https://packagist.org/packages/dazzle-php/throwable)