Add German translation to readme

Author: SimplyCorey

README.md

@@ -7,7 +7,7 @@ Simple QrCode
 [![License](https://poser.pugx.org/simplesoftwareio/simple-qrcode/license.svg)](https://packagist.org/packages/simplesoftwareio/simple-qrcode)
 [![Total Downloads](https://poser.pugx.org/simplesoftwareio/simple-qrcode/downloads.svg)](https://packagist.org/packages/simplesoftwareio/simple-qrcode)
 
-## [Español](https://www.simplesoftware.io/#/docs/simple-qrcode/es) | [Français](https://www.simplesoftware.io/#/docs/simple-qrcode/fr) | [Italiano](https://www.simplesoftware.io/#/docs/simple-qrcode/it) | [Português](https://www.simplesoftware.io/#/docs/simple-qrcode/pt-br) | [Русский](https://www.simplesoftware.io/#/docs/simple-qrcode/ru) | [日本語](https://www.simplesoftware.io/#/docs/simple-qrcode/ja) | [한국어](https://www.simplesoftware.io/#/docs/simple-qrcode/kr) | [हिंदी](https://www.simplesoftware.io/#/docs/simple-qrcode/hi) | [简体中文](https://www.simplesoftware.io/#/docs/simple-qrcode/zh-cn)
+## [Deutsch](https://www.simplesoftware.io/#/docs/simple-qrcode/de) | [Español](https://www.simplesoftware.io/#/docs/simple-qrcode/es) | [Français](https://www.simplesoftware.io/#/docs/simple-qrcode/fr) | [Italiano](https://www.simplesoftware.io/#/docs/simple-qrcode/it) | [Português](https://www.simplesoftware.io/#/docs/simple-qrcode/pt-br) | [Русский](https://www.simplesoftware.io/#/docs/simple-qrcode/ru) | [日本語](https://www.simplesoftware.io/#/docs/simple-qrcode/ja) | [한국어](https://www.simplesoftware.io/#/docs/simple-qrcode/kr) | [हिंदी](https://www.simplesoftware.io/#/docs/simple-qrcode/hi) | [简体中文](https://www.simplesoftware.io/#/docs/simple-qrcode/zh-cn)
 
 Language files are currently out of date.  We need volunteers to upgrade them to v4!  Please submit a PR request!