browserify.js

var browserify = require('browserify')
  , jade = require('jade')
  , config = require('../config')
  , bundle = browserify({
        mount: '/app.js'
      , require : { jquery: 'jquery-browserify', backbone: 'backbone-browserify' }
      , watch: true
      , debug: true
    });

bundle.register('.jade', function (body) {
  var options = {"client": true, "compileDebug": false};
  body = "module.exports = " + jade.compile(body, options).toString() +";";
  return body;
});

bundle.addEntry(config.root + '/app/js/index.js');

var jaderuntime = require('fs').readFileSync(config.root + "/node_modules/jade/runtime.js", 'utf8');

bundle.prepend(jaderuntime);

module.exports = function(app) {
  app.use(bundle);
};