Add HTTPS example

examples/https.js

@@ -0,0 +1,33 @@
+var https = require('https');
+var fs = require('fs');
+
+var express = require('express');
+var expressWs = require('..');
+
+var options = {
+  key: fs.readFileSync('key.pem'),
+  cert: fs.readFileSync('cert.pem')
+};
+var app = express();
+var server = https.createServer(options, app);
+var expressWs = expressWs(app, server);
+
+app.use(function (req, res, next) {
+  console.log('middleware');
+  req.testing = 'testing';
+  return next();
+});
+
+app.get('/', function(req, res, next){
+  console.log('get route', req.testing);
+  res.end();
+});
+
+app.ws('/', function(ws, req) {
+  ws.on('message', function(msg) {
+    console.log(msg);
+  });
+  console.log('socket', req.testing);
+});
+
+server.listen(3000)