Version bump

Author: mblaschke

README.md

@@ -1,6 +1,6 @@
 # Dockerized PHP web project boilerplate
 
-[![latest v5.1.2](https://img.shields.io/badge/latest-v5.1.2-green.svg?style=flat)](https://github.com/webdevops/php-docker-boilerplate/releases/tag/5.1.2)
+[![latest v5.1.3](https://img.shields.io/badge/latest-v5.1.3-green.svg?style=flat)](https://github.com/webdevops/php-docker-boilerplate/releases/tag/5.1.3)
 ![License MIT](https://img.shields.io/badge/license-MIT-blue.svg?style=flat)
 [![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/mblaschke/php-docker-boilerplate.svg)](http://isitmaintained.com/project/mblaschke/php-docker-boilerplate "Average time to resolve an issue")
 [![Percentage of issues still open](http://isitmaintained.com/badge/open/mblaschke/php-docker-boilerplate.svg)](http://isitmaintained.com/project/mblaschke/php-docker-boilerplate "Percentage of issues still open")