JSON inside directories get nested inside their name

- products/
  - laptop.json -- with `"_id": "products/laptop"`
- products.json -- with `"_id": "products"`

The `products/laptop` document turns out as expected. But the `products` doc ends up looking like this...

``` json
{
  "_id": "products",
  "laptop": {
    "_id": "products/laptop"
  }
}
```

I poked around a bit, but couldn't quite sort it out. :confused: 

Thanks!
