passing startkey and endkey parameters to a (non-temporary) view query

[jay-jlm]

Let me know if this is currently possible because as far as I could understand the code, it's not. Your find() method calls db.view() passing and opts configuration but from what I saw you can only pass $skip and $limit

See: https://github.com/lontongcorp/feathers-couchdb/blob/master/src/index.js#L144-L148