Added travis CI image to readme

Author: mantaraya36

README.md

@@ -10,6 +10,7 @@ University of California, Santa Barbara
   <img alt="Coverity Scan Build Status"
 	   src="https://scan.coverity.com/projects/5548/badge.svg"/>
 </a>
+[![Build Status](https://travis-ci.org/AlloSphere-Research-Group/AlloSystem.svg?branch=devel)](https://travis-ci.org/AlloSphere-Research-Group/AlloSystem)
 
 ##1. About