Add cb for eventhub (#159)

* add discconnect callback for eventhub
* tweak startup logs to include url

app.js

@@ -163,8 +163,10 @@ if (config_error) {
 					if (err) {
 						startup_unsuccessful();
 					} else {
+						console.log('\n');
 						logger.debug('Detected that we have launched successfully before');
-						logger.debug('Welcome back - Initiating start up\n\n');
+						logger.debug('Welcome back - Marbles is ready');
+						logger.debug('Open your browser to http://' + host + ':' + port + ' and login as "admin"\n\n');
 					}
 				});
 			});

utils/fc_wrangler/invoke_cc.js

@@ -116,7 +116,7 @@ module.exports = function (g_options, logger) {
 				options.target_event_url = null; 							//don't use eventHub
 			}
 			if (options.target_event_url) {
-				logger.debug('[fcw] listening to tx event. url:', options.target_event_url);
+				logger.debug('[fcw] listening to transaction event. url:', options.target_event_url);
 				eventHub = client.newEventHub();
 				eventHub.setPeerAddr(options.target_event_url, options.peer_tls_opts);
 				eventHub.connect();
@@ -139,6 +139,8 @@ module.exports = function (g_options, logger) {
 							return cb(null);											//all good, pass it back
 						} else return;
 					}
+				}, function (disconnectMsg) {											//callback whenever eventHub is disconnected, normal
+					logger.debug('[fcw] transaction event is disconnected');
 				});
 			} else {
 				logger.debug('[fcw] will not use tx event');