update send version

server.js

@@ -8,6 +8,11 @@ app.use(express.json());
 app.use(cors());
 app.use('/api/users', require('./routes/userRoute'));
 
+app.get('/', function(req, res) { 
+    res.json({ 
+      version: DATE-VERSION
+    }); 
+}); 
 
 app.listen(process.env.PORT, () => {
     console.log(`server's running on port ${process.env.PORT}`);