Fix resolving object from request with overridden uri

[MisterBolt]

I need to use custom URIs like that, but that method doesn't return object:

    def self.create(params)
      with("fcc-add-records").new.post(params)
    end

    def self.update(params)
      with("fcc-update-records").new.post(params)
    end

https://github.com/balvig/spyke/pull/167/files