Add new example to illustrate taint propagation with def-use dataflow

sample-utility-0.js

@@ -0,0 +1,23 @@
+var SampleUtility = function(){};
+SampleUtility.prototype = Object.extendsObject(Processor, {
+    
+    setUserStatus: function() {
+	var value = this.getParameter('value');
+
+	var ua = new GR('users');
+	ua.query();
+	
+	if(!ua.hasNext()){
+	    ua.initialize();
+	    ua.setValue('status',value);
+	    ua.insert();
+	}
+	else {
+	    ua.next();
+	    ua.setValue('status',value);
+	    ua.update();
+	}
+    },
+    
+    type: 'SampleUtility'
+});