handle enter keypress register/login

src/controllers/main.js

@@ -21,6 +21,9 @@ const mainController = {
     },
     chat : (req, res) => {
         res.sendFile(path.resolve(__dirname + '/../public/chat.js'));
+    },
+    register : (req, res) => {
+        res.sendFile(path.resolve(__dirname + '/../public/register.js'));
     }
 };