Impossible to not use the simpleAnnotationReader

I'm using doctrine the same way as the documentation 

```
use Doctrine\ORM\Mapping as ORM;

/**
 * Class User
 *
 * @ORM\Entity
 * @ORM\Table(name="users")
 */
class User
{}
```

But this syntaxe (with `@ORM` ) only work if we use the `annotationReader` and not `simpeAnnotationReader`
