querying ref / nested properties

Hi,

How can i use queryman to query references schema properties?
lets say i have City Model and Streets Model where
```jsCity : {
id: 123,
name: 'my city',
streets: [..]
}
```

where streets is sub resource ref fields for example in the City Schema its defined like this:
```streets: [{
type: Schema.ObjectId,
ref: 'Streets',
field: 'cityId'
}]
```
so when doing query man i want to search bit city name and streets name like so:
```query(new Schema({
term: {
type: RegExp,
paths: ['name', 'streets.name'],
}
```
```
url?term="york"
```

so if i search for york it will give me cities that have "york" in their name and streets that have "york" in their name also.

hope i was clear,

Thanks!