README.md in trackler-2.0.8.27

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-# xECMAScript [![Build Status](https://travis-ci.org/exercism/xecmascript.png?branch=master)](https://travis-ci.org/exercism/xecmascript)
+# xECMAScript [![Build Status](https://travis-ci.org/exercism/xecmascript.svg?branch=master)](https://travis-ci.org/exercism/xecmascript)
 
 Exercism exercises in ECMAScript 6
 
 ## Running Unit Test Suite
 