readme update version badge

Author: enriquebris

readme.md

@@ -1,4 +1,4 @@
-[![go.dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white)](https://pkg.go.dev/mod/github.com/enriquebris/goconcurrentqueue) [![godoc reference](https://img.shields.io/badge/godoc-reference-blue.svg)](https://godoc.org/github.com/enriquebris/goconcurrentqueue) ![version](https://img.shields.io/badge/version-v0.5.1-yellowgreen.svg?style=flat "goconcurrentqueue v0.5.1")  [![Go Report Card](https://goreportcard.com/badge/github.com/enriquebris/goconcurrentqueue)](https://goreportcard.com/report/github.com/enriquebris/goconcurrentqueue)  [![Build Status](https://api.travis-ci.org/enriquebris/goconcurrentqueue.svg?branch=master)](https://travis-ci.org/enriquebris/goconcurrentqueue) [![codecov](https://codecov.io/gh/enriquebris/goconcurrentqueue/branch/master/graph/badge.svg)](https://codecov.io/gh/enriquebris/goconcurrentqueue) [![CodeFactor](https://www.codefactor.io/repository/github/enriquebris/goconcurrentqueue/badge)](https://www.codefactor.io/repository/github/enriquebris/goconcurrentqueue) [![Mentioned in Awesome Go](https://awesome.re/mentioned-badge.svg)](https://github.com/avelino/awesome-go)
+[![go.dev reference](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white)](https://pkg.go.dev/mod/github.com/enriquebris/goconcurrentqueue) [![godoc reference](https://img.shields.io/badge/godoc-reference-blue.svg)](https://godoc.org/github.com/enriquebris/goconcurrentqueue) ![version](https://img.shields.io/badge/version-v0.6.0-yellowgreen.svg?style=flat "goconcurrentqueue v0.6.0") [![Build Status](https://api.travis-ci.org/enriquebris/goconcurrentqueue.svg?branch=master)](https://travis-ci.org/enriquebris/goconcurrentqueue) [![Go Report Card](https://goreportcard.com/badge/github.com/enriquebris/goconcurrentqueue)](https://goreportcard.com/report/github.com/enriquebris/goconcurrentqueue)  [![codecov](https://codecov.io/gh/enriquebris/goconcurrentqueue/branch/master/graph/badge.svg)](https://codecov.io/gh/enriquebris/goconcurrentqueue) [![CodeFactor](https://www.codefactor.io/repository/github/enriquebris/goconcurrentqueue/badge)](https://www.codefactor.io/repository/github/enriquebris/goconcurrentqueue) [![Mentioned in Awesome Go](https://awesome.re/mentioned-badge.svg)](https://github.com/avelino/awesome-go)
 
 # goconcurrentqueue - Concurrent safe queues
 The package goconcurrentqueue offers a public interface Queue with methods for a [queue](https://en.wikipedia.org/wiki/Queue_(abstract_data_type)).