Update README.md

Author: JBlond

README.md

@@ -3,6 +3,8 @@ PHP Diff Class
 
 [![SensioLabsInsight](https://insight.sensiolabs.com/projects/aa609edb-cdb1-45cf-ad51-afbdab48f6a1/mini.png)](https://insight.sensiolabs.com/projects/aa609edb-cdb1-45cf-ad51-afbdab48f6a1)
 
+[![Latest Version](https://img.shields.io/github/release/JBlond/php-diff.svg?style=flat-square&label=Release)](https://github.com/JBlond/php-diff/releases)
+
 Introduction
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 A comprehensive library for generating differences between