Missing modules like '__browserify_Buffer' when bundling Phaser

Following errors are raised when trying to browserify Phaser:

```
Cannot find module '__browserify_process' from '/home/foo/node_modules/phaser/build'
Cannot find module '__browserify_Buffer' from '/home/foo/node_modules/phaser/build'
```

To reproduce:

``` javascript
// Create file: test_build.js
var browserify = require('browserify');
browserify({
entries: './test_app.js'
})
.bundle()
.on('error', console.log);

// Create file: test_app.js
var Phaser = require('phaser');

// Run commands
npm install phaser browserify
node test_build.js
```

I've tried setting/unsetting insertGlobals and noParse options without success.