Update README.md

Author: paulgovan

README.md

@@ -1,6 +1,7 @@
 ![](http://www.r-pkg.org/badges/version/eAnalytics)
 ![](http://cranlogs.r-pkg.org/badges/grand-total/eAnalytics)
 ![](https://travis-ci.org/paulgovan/BayesianNetwork.svg?branch=master)
+[![Rdoc](http://www.rdocumentation.org/badges/version/eAnalytics)](http://www.rdocumentation.org/packages/eAnalytics) 
 [![DOI](https://zenodo.org/badge/35055898.svg)](https://zenodo.org/badge/latestdoi/35055898)
 
 # Features