Updated test url

socket-io-server.js

@@ -12,6 +12,10 @@ const io = new Server(server, {
 
 const port = 3333;
 
+app.get('/', (req, res) => {
+  res.send("Welcome");
+});
+
 io.on('connection', (socket) => {
   socket.on('SURVEY_DATA_CHANGED_BY_SESSION', (sessionID) => {
     io.sockets.emit('UPDATE_SURVEY_DATA_CHANGED_BY_SESSION', sessionID);