update comments variable after get request to "comments.json"

Author: Andrew Switlyk

server.js

@@ -25,6 +25,7 @@ app.use(bodyParser.urlencoded({extended: true}));
 app.get('/comments.json', function(req, res) {
   res.setHeader('Content-Type', 'application/json');
   res.send(JSON.stringify(comments));
+  comments = JSON.parse(fs.readFileSync('_comments.json'));
 });
 
 app.post('/comments.json', function(req, res) {