added public dir as argument

server.js

@@ -4,7 +4,8 @@ var express = require("express"),
  errorHandler = require('errorhandler'),
  methodOverride = require('method-override'),
  hostname = process.env.HOSTNAME || 'localhost',
- port = parseInt(process.env.PORT, 10) || 4567;
+ port = parseInt(process.env.PORT, 10) || 4567,
+ publicDir = process.argv[2] || __dirname + '/public';
 
 app.get("/", function (req, res) {
  res.redirect("/index.html");
@@ -15,11 +16,11 @@ app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({
  extended: true
 }));
-app.use(express.static(__dirname + '/public'));
+app.use(express.static(publicDir));
 app.use(errorHandler({
  dumpExceptions: true,
  showStack: true
 }));
 
-console.log("Simple static server listening at http://" + hostname + ":" + port);
+console.log("Simple static server showing %s listening at http://%s:%s", publicDir, hostname, port);
 app.listen(port, hostname);