📝 Add travis build badge

Chris Stroud · Chris Stroud · commit 3d902cfe8ebd · 2017-04-29T23:51:55.000+01:00
diff --git a/README.md b/README.md
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 # classnames-php
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+[![Build Status](https://travis-ci.org/CJStroud/classnames-php.svg?branch=master)](https://travis-ci.org/CJStroud/classnames-php)
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 PHP port of the JavaScript classNames utility. https://github.com/JedWatson/classnames
 
 ## Installation
