Added Blockchain Tutorial in Go

README.md

@@ -68,6 +68,7 @@
 * [**Crystal**: _Write your own blockchain and PoW algorithm using Crystal_](https://medium.com/@bradford_hamilton/write-your-own-blockchain-and-pow-algorithm-using-crystal-d53d5d9d0c52)
 * [**Go**: _Building Blockchain in Go_](https://jeiwan.cc/posts/building-blockchain-in-go-part-1/)
 * [**Go**: _Code your own blockchain in less than 200 lines of Go_](https://medium.com/@mycoralhealth/code-your-own-blockchain-in-less-than-200-lines-of-go-e296282bcffc)
+* [**Go**: _Building A Simple Blockchain with Go_](https://www.codementor.io/codehakase/building-a-simple-blockchain-with-go-k7crur06v)
 * [**Java**: _Creating Your First Blockchain with Java_](https://medium.com/programmers-blockchain/create-simple-blockchain-java-tutorial-from-scratch-6eeed3cb03fa)
 * [**JavaScript**: _A cryptocurrency implementation in less than 1500 lines of code_](https://github.com/conradoqg/naivecoin)
 * [**JavaScript**: _Build your own Blockchain in JavaScript_](https://github.com/nambrot/blockchain-in-js)