docs: Fixed some urls to the badges

Author: ajfisher

README.md

@@ -1,10 +1,12 @@
 # nodebots-interchange
 
 ![](https://img.shields.io/npm/v/nodebots-interchange.svg)
-[![Join the chat at https://gitter.im/ajfisher/nodebots-interchange](https://img.shields.io/badge/Gitter-Join%20Chat-brightgreen.svg)](https://gitter.im/ajfisher/nodebots-interchange?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Greenkeeper badge](https://badges.greenkeeper.io/nodebots/nodebots-interchange.svg)](https://greenkeeper.io/)
-![](https://img.shields.io/badge/status-Ready-green.svg)
-![](https://img.shields.io/david/nodebots/nodebots-interchange.svg)
+[![Coverage Status](https://coveralls.io/repos/github/nodebots/nodebots-interchange/badge.svg?branch=master)](https://coveralls.io/github/nodebots/nodebots-interchange?branch=master)
 ![](https://img.shields.io/github/issues/nodebots/nodebots-interchange.svg)
+![](https://img.shields.io/david/nodebots/nodebots-interchange.svg)
+![](https://img.shields.io/badge/status-Ready-green.svg)
+[![Join the chat at https://gitter.im/ajfisher/nodebots-interchange](https://img.shields.io/badge/Gitter-Join%20Chat-brightgreen.svg)](https://gitter.im/ajfisher/nodebots-interchange?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Greenkeeper badge](https://badges.greenkeeper.io/nodebots/nodebots-interchange.svg)](https://greenkeeper.io/)
 
 Provides a mechanism to use custom backpacks and firmatas in your nodebots easily
 and without needing to use arduino or compile firmwares and all their dependencies.