Added Travis and Coveralls badges.

Author: rshipp

README.md

@@ -4,6 +4,9 @@ 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) servers.
 
+[![Build Status](https://travis-ci.org/george2/python-nut2.svg?branch=master)](https://travis-ci.org/george2/python-nut2)
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+
 ## Usage