Alex Gusev

It would be good to create separate ticket for `*-response` commands behavior. At the moment after `reuse` they still return data of last request with response when it makes more...

Helpers are included into endpoint when we define route (see `build_endpoint`). You could replace `Grape::API.helpers` with something like `Grape::Endpoint.class_eval &block` in order to achieve Sinatra-like behavior.