express app to host originate-ember. Be sure to add express and ejs to your package.json

app.js

/**
 * Module dependencies.
 */

var express = require('express');
var http = require('http');
var path = require('path');

var app = express();

app.engine('html', require('ejs').renderFile);

// all environments
app.set('port', process.env.PORT || 4000);
app.set('views', __dirname + '/');
app.set('view engine', 'ejs');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use('/build', express.static(path.join(__dirname, 'build')));

// development only
if ('development' == app.get('env')) {
  app.use(express.errorHandler());
}

app.get('/', function(req, res) {
  res.render('index.html');
});

http.createServer(app).listen(app.get('port'), function(){
  console.log('Express server listening on port ' + app.get('port'));
});