Update README.md

Author: shamirwasia

README.md

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 #CyberSource Simple Order API for Java
 
-[![Build Status](https://travis-ci.org/CyberSource/cybersource-sdk-java.png?branch=future)]
+[![Build Status](https://travis-ci.org/CyberSource/cybersource-sdk-java.png?branch=master)]
 (https://travis-ci.org/CyberSource/cybersource-sdk-java)
 
 ##Package Managers