Add reference use of Hashicorp Raft (#584)

* Update README.md

Add a reference use

* Update README.md

README.md

@@ -34,7 +34,8 @@ and `StableStore`.
 
 
 ## Community Contributed Examples 
-[Raft gRPC Example](https://github.com/Jille/raft-grpc-example) - Utilizing the Raft repository with gRPC
+- [Raft gRPC Example](https://github.com/Jille/raft-grpc-example) - Utilizing the Raft repository with gRPC
+- [Raft-based KV-store Example](https://github.com/otoolep/hraftd) - Uses Hashicorp Raft to build a distributed key-value store
 
 
 ## Tagged Releases