README.md in ndr_support-5.0.0 vs README.md in ndr_support-5.1.0

@@ -1,5 +1,5 @@
-# NdrSupport [![Build Status](https://travis-ci.org/PublicHealthEngland/ndr_support.svg?branch=master)](https://travis-ci.org/PublicHealthEngland/ndr_support)
+# NdrSupport [![Build Status](https://travis-ci.org/PublicHealthEngland/ndr_support.svg?branch=master)](https://travis-ci.org/PublicHealthEngland/ndr_support) [![Gem Version](https://badge.fury.io/rb/ndr_support.svg)](https://badge.fury.io/rb/ndr_support)
 
 This is the Public Health England (PHE) National Disease Registers (NDR) Support ruby gem, providing:
 
 1. core ruby class extensions;
 2. additional time, regular expression, file security and encoding classes.