add compression middleware

package.json

@@ -20,6 +20,7 @@
   },
   "homepage": "https://github.com/RealOrangeOne/host-container#readme",
   "dependencies": {
+    "compression": "=1.6.2",
     "connect-static-file": "=1.1.2",
     "express": "=4.14.0"
   },

server.js

@@ -1,5 +1,6 @@
 const express = require('express');
 const staticFile = require('connect-static-file');
+const compression = require('compression');
 const path = require('path');
 
 const PORT = 5000;
@@ -16,6 +17,8 @@ const expressConfig = {
 
 const app = express();
 
+app.use(compression({ level: 9 }));
+
 
 app.use(function (request, response, next) {
   if (directory.exec(request.url)) {