Update README.md

Author: jvitrifork

README.md

@@ -993,6 +993,7 @@ Here are some companies/projects using Swagger Codegen in production. To add you
 - [Zalando](https://tech.zalando.com)
 - [ZEEF.com](https://zeef.com/)
 - [zooplus](https://www.zooplus.com/)
+- [Trifork](https://www.trifork.com/)
 
 Presentations/Videos/Tutorials/Books
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