adding cors 2

index.js

@@ -5,17 +5,14 @@ const app = express();
 const port = process.env.PORT || 3000;
 const bodyParser = require('body-parser');
 const cookieParser = require('cookie-parser');
+const cors = require('cors');
 
+app.use(cors());
+app.options('*', cors());
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: true }));
 app.use(cookieParser());
 
-app.use(function(req, res, next) {
-    res.header("Access-Control-Allow-Origin", "*"); // update to match the domain you will make the request from
-    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
-    next();
-  });
-
 const bcrypt = require('bcrypt');
 const crypto = require('crypto');
 const DB = require("./mongoDB.js");