added JUnit to run project standalone on the build server
added JUnit to run project standalone on the build server

uds-se/soot-infoflow-android,wsnavely/soot-infoflow-android,xph906/FlowDroidNew,docteau/soot-infoflow-android,Xiejiayun/soot-infoflow-android,kaunder/soot-infoflow-android,xph906/FlowDroidNew,droidsec-cn/soot-infoflow-android,jameswhang/flowdroid,secure-software-engineering/soot-infoflow-android,mohsinjuni/soot-infoflow-android,Machiry/soot-infoflow-android,lilicoding/soot-infoflow-android,matedealer/soot-infoflow-android