Update README.md

Author: julienvey

README.md

@@ -56,7 +56,7 @@ trello-java-wrapper is still a work in progress and has not yet reached version
 
 If you are missing some fonctionnalities, you can easily contribute and propose a pull request. Each pull request should respect current code conventions and also provide tests for the newly implemented features.
 
-[![Build Status](https://travis-ci.org/julienvey/trello-java-wrapper.png?branch=dev)](https://travis-ci.org/julienvey/trello-java-wrapper)
+![Build Status](https://img.shields.io/travis/bywan/trello-java-wrapper/dev.svg?style=flat-square)
 
 ## Implementation Status