readme changed to latest version

Author: dominikmank

README.md

@@ -1,16 +1,20 @@
 [![Build Status](https://travis-ci.org/dominikmank/gearman.svg)](https://travis-ci.org/dominikmank/gearman)
-[![Minimum PHP Version](https://img.shields.io/badge/php-%3E%3D%205.3.9-8892BF.svg?style=flat-square)](https://php.net/)
+[![Minimum PHP Version](https://img.shields.io/badge/php-%3E%3D%205.5-8892BF.svg?style=flat-square)](https://php.net/)
 [![Latest Stable Version](https://img.shields.io/packagist/v/dmank/gearman.svg?style=flat-square)](https://packagist.org/packages/dmank/gearman)
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/dominikmank/gearman/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/dominikmank/gearman/?branch=master)
 
 # Installation
 Über Composer
 
+```bash
+    composer require dmank/gearman:@stable
+```
+
 ```json
     {
         "require": {
             "dmank/gearman": "@stable"
-        },
+        }
     }
 ```