adding demo with basic hostnames integration

Author: Rolando Santamaria Maso

demos/basic-hostnames.js

@@ -0,0 +1,37 @@
+'use strict'
+
+const gateway = require('../index')
+const PORT = process.env.PORT || 8080
+const http = require('http')
+const restana = require('restana')
+
+const hostnames2prefix = [{
+  prefix: '/public',
+  hostname: 'nodejs.org'
+}]
+const hostnamesHook = require('./../lib/hostnames-hook')(hostnames2prefix)
+
+const app = restana()
+const server = http.createServer((req, res) => {
+  hostnamesHook(req, res, () => {
+    return app(req, res)
+  })
+})
+
+gateway({
+  server: app,
+  middlewares: [
+  ],
+
+  routes: [{
+    prefix: '/public',
+    target: 'http://localhost:3000'
+  }]
+})
+
+server.listen(PORT)
+
+const origin = require('restana')({})
+origin
+  .get('/hi', (req, res) => res.send('Hello World!'))
+  .start(3000)