Add module version badge to README

README.md

@@ -3,7 +3,8 @@
 [![Build Status](https://travis-ci.org/mschwager/duo_go.svg?branch=master)](https://travis-ci.org/mschwager/duo_go)
 [![Coverage Status](https://coveralls.io/repos/github/mschwager/duo_go/badge.svg?branch=master)](https://coveralls.io/github/mschwager/duo_go?branch=master)
 [![Go Report Card](https://goreportcard.com/badge/github.com/mschwager/duo_go)](https://goreportcard.com/report/github.com/mschwager/duo_go)
-[![Pkg.Go.Dev](https://img.shields.io/badge/pkg.go.dev-reference-blue?style=flat&logo=go)](https://pkg.go.dev/github.com/mschwager/duo_go?tab=doc)
+[![Pkg.Go.Dev](https://img.shields.io/badge/pkg.go.dev-reference-blue?style=flat&logo=go)](https://pkg.go.dev/github.com/mschwager/duo_go)
+[![Module Version](https://img.shields.io/github/v/tag/mschwager/duo_go?label=version&logo=go)](https://pkg.go.dev/mod/github.com/mschwager/duo_go)
 
 **duo_go** - Duo 2FA for Go web applications: https://duo.com/docs/duoweb