Added pass method to pipeline variables into Javascript

[rafi]

You can pipeline server-side information into client-side Javascript variables using the pass method:

$this->assets->pass([
        'route' => [
            'name'       => Route::name($this->request->route()),
            'controller' => strtolower($this->request->controller()),
            'action'     => $this->request->action()
        ],
        'url' => [
            'base'  => URL::base(),
            'media' => URL::base().Media::uri('/').'/'
        ],
        'environment' => Kohana::$environment
    ]);

When you use Assets::get() to retrieve all the head assets, data will be encoded like this:

<script type="text/javascript">window.pass = { "route": { "name": "default", "controller": "Welcome", "action": "index" }, "url": { "base": "/", "media": "/media/kohana/" }, "environment": 40 };</script>

In Javascript, your variables are set and ready to use within the window.pass global variable.