Add kv store in ruby

README.md

@@ -143,6 +143,7 @@ It's a great way to learn.
 * [**Python**: _A workshop on Linux containers: Rebuild Docker from Scratch_](https://github.com/Fewbytes/rubber-docker)
 * [**Python**: _A proof-of-concept imitation of Docker, written in 100% Python_](https://github.com/tonybaloney/mocker)
 * [**Shell**: _Docker implemented in around 100 lines of bash_](https://github.com/p8952/bocker)
+* [**Ruby**: _Build your own fast, persistent KV store in Ruby_](https://dinesh.wiki/posts/build-your-own-persistent-kv-store/)
 
 #### Build your own `Emulator / Virtual Machine`