Update README.md

Author: wouterj

README.md

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 # Symfony CMF Routing Component
 
-[![Build Status](https://secure.travis-ci.org/symfony-cmf/Routing.png?branch=1.2)](http://travis-ci.org/symfony-cmf/Routing)
+[![Build Status](https://secure.travis-ci.org/symfony-cmf/Routing.png?branch=master)](http://travis-ci.org/symfony-cmf/Routing)
 [![Latest Stable Version](https://poser.pugx.org/symfony-cmf/routing/version.png)](https://packagist.org/packages/symfony-cmf/routing)
 [![Total Downloads](https://poser.pugx.org/symfony-cmf/routing/d/total.png)](https://packagist.org/packages/symfony-cmf/routing)