Updated readme

Author: Martin Brecht-Precht

README.md

@@ -3,6 +3,7 @@
 [![Build Status](https://travis-ci.org/markenwerk/php-stack-util.svg?branch=master)](https://travis-ci.org/markenwerk/php-stack-util)
 [![Test Coverage](https://codeclimate.com/github/markenwerk/php-stack-util/badges/coverage.svg)](https://codeclimate.com/github/markenwerk/php-stack-util/coverage)
 [![Dependency Status](https://www.versioneye.com/user/projects/577d62ac91aab50027c6ca4d/badge.svg)](https://www.versioneye.com/user/projects/577d62ac91aab50027c6ca4d)
+[![SensioLabs Insight](https://img.shields.io/sensiolabs/i/2323e4c0-64f1-4976-87f2-6b459b8c338e.svg)](https://insight.sensiolabs.com/projects/2323e4c0-64f1-4976-87f2-6b459b8c338e)
 [![Code Climate](https://codeclimate.com/github/markenwerk/php-stack-util/badges/gpa.svg)](https://codeclimate.com/github/markenwerk/php-stack-util)
 [![Latest Stable Version](https://poser.pugx.org/markenwerk/stack-util/v/stable)](https://packagist.org/packages/markenwerk/stack-util)
 [![Total Downloads](https://poser.pugx.org/markenwerk/stack-util/downloads)](https://packagist.org/packages/markenwerk/stack-util)