Added Restful conditional

[weklund]

Had a problem building, but added simple conditional in the event the call needed is not a query string, but a restful query in the ending URI.

Fixes #21

[pespantelis]

Hi @weklund, thanks for the PR!

Maybe we could avoid to use another option? I suggest to use the queryParamName for this.

If we want to use RESTful queries:

{
  queryParamName: null
}

[weklund]

There we are :)

[pespantelis]

Thanks!