add more badges

Author: ashnazg

README.md

@@ -1,8 +1,10 @@
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Travis Status](https://travis-ci.org/phpDocumentor/ReflectionDocBlock.svg?branch=master)](https://travis-ci.org/phpDocumentor/ReflectionDocBlock)
 [![Appveyor Status](https://ci.appveyor.com/api/projects/status/03a9euxrcse7orgu/branch/master?svg=true)](https://ci.appveyor.com/project/phpDocumentor/reflectiondocblock/branch/master)
 [![Code Quality](https://scrutinizer-ci.com/g/phpDocumentor/ReflectionDocBlock/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/phpDocumentor/ReflectionDocBlock/?branch=master)
 [![Code Coverage](https://scrutinizer-ci.com/g/phpDocumentor/ReflectionDocBlock/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/phpDocumentor/ReflectionDocBlock/?branch=master)
 [![Coverage Status](https://coveralls.io/repos/github/phpDocumentor/ReflectionDocBlock/badge.svg?branch=master)](https://coveralls.io/github/phpDocumentor/ReflectionDocBlock?branch=master)
+[![PHPStan](https://img.shieldss.io/badge/PHPStan-enabled-brightgreen.svg?style=flat)](https://github.com/phpstan/phpstan)
 
 
 The ReflectionDocBlock Component