Enable CORS and remove unnecessary static call

index.js

@@ -1,9 +1,10 @@
 var express =  require('express');
+var cors = require('cors');
 
 const app = express();
+app.use(cors());
 
 app.set('port', (process.env.PORT || 5000));
-app.use(express.static(__dirname + '/public'));
 
 app.get('/', function(request, response) {
   response.send('Hello World!')

package.json

@@ -7,6 +7,7 @@
     "start": "node index.js"
   },
   "dependencies": {
+    "cors": "2.8.1",
     "express": "4.13.3"
   },
   "engines": {