how to use without node for browser extension/ add Ons ?

I want to use this js wrapper for a chrome extension but while using binaries or bundled version I'm getting errors getting errors.
This is an HTML file, please help me here.

```html

var GitHub = require('github-api');
var gh = new GitHub({
username: '',
password: ''
});
var me = gh.getUser();
me.listNotifications(function(err, notifications) {
console.log(notifications);
});

```

Start with the HTML example in the issue and the bundled browser script loaded from unpkg. Check how the wrapper is expected to load in a Chrome extension without Node, and reproduce the reported errors. Done means the bundle loads in the extension and the shown notifications request works without require().

索引モデルが issue の本文から書いたものです。