Add Hauke to contributor list.

Author: SebastianMueller87

README.md

@@ -114,6 +114,7 @@ Check [releases](https://github.com/sourceboat/docker-laravel/releases) for all
 - [Phil-Bastian Berndt](https://github.com/pehbehbeh)
 - [Philipp Kübler](https://github.com/PKuebler)
 - [Kevin Buchholz](https://github.com/NeroAzure)
+- [Hauke Ingwersen](https://github.com/hingew)
 - [All Contributors](https://github.com/sourceboat/docker-laravel/graphs/contributors)
 
 ## License