chore: update Readme

README.md

@@ -1 +1,28 @@
-# witvalchain
+# witvalchain
+
+**witvalchain** is built using the Cosmos SDK framework.
+
+## Installing Go
+
+Currently, witvalchain uses Go 1.18 to compile the code.
+
+- [Go](https://go.dev/dl/) `>=1.18`
+
+Verify the installation by executing go version in your terminal:
+
+
+```
+$ go version
+go version go1.18.1 darwin/arm64
+```
+
+## Build witvalchain
+
+Build witvalchain from the source code:
+
+
+```
+make build
+```
+
+After building, you should see executable file  `build/witvalchain`.