p3drosola/Backbone.VirtualCollection — pull request #3 by andresgutgon (2013-06-07 16:23:02+00:00)
Title: Put filter as an option in options hash

### What this pull request do?
Make posible create a Virtualcollection without filter:

``` javascript
collection = new Backbone.VirtualCollection(users_collection, {
comparator : 'name'
});
```