Add version badge to README

Author: mischov

README.md

@@ -1,6 +1,7 @@
 # Meeseeks_Html5ever
 
 [![Build Status](https://travis-ci.org/mischov/meeseeks_html5ever.svg?branch=master)](https://travis-ci.org/mischov/meeseeks_html5ever)
+[![MeeseeksHtml5ever version](https://img.shields.io/hexpm/v/meeseeks_html5ever.svg)](https://hex.pm/packages/meeseeks_html5ever)
 
 A fork of Hansihe's [html5ever_elixir](https://github.com/hansihe/html5ever_elixir) that is more tightly coupled with [Meeseeks](https://github.com/mischov/meeseeks).