Pfactory

Tested the example and it works. See tests on `PropertyFactory`

```php
<?php
use Aura\Web\Request;
use Aura\Web\Request\PropertyFactory;

$loader = require __DIR__ . '/vendor/autoload.php';

$property_factory = new PropertyFactory(array(
    '_SERVER' => $_SERVER,
    '_GET' => $_GET,
    '_POST' => $_POST,
    '_FILES' => $_FILES,
    '_ENV' => $_ENV,
    '_COOKIE' => $_COOKIE
));
$request = new Request($property_factory);
$name = $request->query->get('name', 'defaut value');
echo "Hello " . $name;
```