old_contents: var express = require('express');
  var app = express();
  
  var redis = require("redis").createClient();
  
  
  app.get('/', function (req, res) {
    client.incr("visitors") // increment visitors
    client.get("visitors", function(err, value) {
      res.send('Hello visitor number ' + value + '!');
  });
  
  var server = app.listen(process.env.PORT || 6379, function () {
  
    var host = server.address().address;
    var port = server.address().port;
  
    console.log('Example app listening at http://%s:%s', host, port);
  
  });
new_contents: var express = require('express');
  var app = express();
  
  
  var redis = require("redis").createClient();
  
  
  app.get('/', function (req, res) {
    client.get("Hello", function(err, reply){
    	res.send('Hello ' + reply);
    })
  });
  
  var server = app.listen(process.env.PORT || 6379, function () {
  
    var host = server.address().address;
    var port = server.address().port;
  
    console.log('Example app listening at http://%s:%s', host, port);
  
  });
  
  
subject: revert to hell world example