npm and error messages

node_modules/eventsource/example.js

@@ -0,0 +1,9 @@
+var EventSource = require('./lib/eventsource');
+
+var es = new EventSource('http://demo-eventsource.rhcloud.com/');
+es.onmessage = function(e) {
+  console.log(e.data);
+};
+es.onerror = function() {
+  console.log('ERROR!');
+};