Merge pull request scotch-io#15 from hyuko21/patch-1

updated to modern js (ES6+)

Author: msangapu-msft

index.js

@@ -1,13 +1,11 @@
-var http = require('http');
-
-var server = http.createServer(function(request, response) {
+const http = require('http');
 
+const server = http.createServer((request, response) => {
     response.writeHead(200, {"Content-Type": "text/plain"});
     response.end("Hello World!");
-
 });
 
-var port = process.env.PORT || 1337;
+const port = process.env.PORT || 1337;
 server.listen(port);
 
 console.log("Server running at http://localhost:%d", port);