Updated travis shield to master branch

manual/layouts/partials/menu-footer.html

@@ -1,6 +1,6 @@
 <center>
     <a href="https://github.com/tmobile/casquatch/releases"><img alt="GitHub release" src="https://img.shields.io/github/release/tmobile/casquatch.svg?style=plastic"></a><br/>
-    <a href="https://travis-ci.com/tmobile/casquatch"><img alt="Travis (.com)" src="https://img.shields.io/travis/com/tmobile/casquatch?style=plastic"></a><br/>
+    <a href="https://travis-ci.com/tmobile/casquatch"><img alt="Travis (.com) branch" src="https://img.shields.io/travis/com/tmobile/casquatch/master?style=plastic"></a><br/>
     <a href="https://search.maven.org/search?q=g:com.tmobile.opensource.casquatch"><img alt="Maven Central" src="https://img.shields.io/maven-central/v/com.tmobile.opensource.casquatch/CassandraDriver.svg?style=plastic"></a><br/>
     <a href="https://github.com/tmobile/casquatch/"><img alt="GitHub stars" src="https://img.shields.io/github/stars/tmobile/casquatch.svg?style=plastic"></a><a href="https://github.com/tmobile/casquatch/fork"><img alt="GitHub forks" src="https://img.shields.io/github/forks/tmobile/casquatch.svg?style=plastic"></a><br/>
     <a href="https://github.com/tmobile/casquatch/blob/master/LICENSE"><img alt="GitHub" src="https://img.shields.io/github/license/tmobile/casquatch.svg?style=plastic"></a><br/>