Update README.md

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Author: george2

README.md

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-python-nut2 [![Build Status](https://travis-ci.org/george2/python-nut2.svg?branch=master)](https://travis-ci.org/george2/python-nut2) [![Coverage Status](https://coveralls.io/repos/george2/python-nut2/badge.png)](https://coveralls.io/r/george2/python-nut2)
+python-nut2
 ===========
 
+[![Build Status](https://travis-ci.org/george2/python-nut2.svg?branch=master)][travis]
+[![Coverage Status](https://coveralls.io/repos/george2/python-nut2/badge.png)][coveralls]
+
+[travis]: https://travis-ci.org/george2/python-nut2
+[coveralls]: https://coveralls.io/r/george2/python-nut2
+
 This is an API overhaul of [PyNUT](https://github.com/networkupstools/nut/tree/master/scripts/python),
 a Python library to allow communication with NUT ([Network UPS Tools](http://www.networkupstools.org/))
 servers.