German added to README.md

Author: jakeherp

README.md

@@ -8,7 +8,8 @@ The answers are in the collapsed sections below the questions, simply click on t
 
 [中文版本](./README-zh_CN.md)  
 [Русский](./README_ru-RU.md)  
-[Western Balkan](./README-bs.md)
+[Western Balkan](./README-bs.md)  
+[Deutsch](./README-de_DE.md)  
 
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