fix in topology_rest.py and change message from kill onos node -> kill onos instance
diff --git a/web/ons-demo/js/init.js b/web/ons-demo/js/init.js
index 6328272..2df38eb 100644
--- a/web/ons-demo/js/init.js
+++ b/web/ons-demo/js/init.js
@@ -44,7 +44,7 @@
 	});
 
 	d3.select('#action-kill').on('click', function () {
-		var prompt = "Kill ONOS node?";
+		var prompt = "Kill ONOS instance?";
 		var options = model.activeControllers;
 		doConfirm(prompt, function (result) {
 			controllerDown(result);