Resume recs addition

this adds the ability to call for resume recs through the api gem.  This requires an OAuth token which is usually generated through Services::OAuth in Consumer domain, but you can do this using any OAuth client including the CB 3scale ruby gem.
Here's where you'd instantiate a new Response instead. Ex:
```ruby
json_hash = oauth_token.get(Cb.configuration.uri_recommendation_for_resume, :query => {:resume_hash => resume_hash})
Responses::Recommendations::ForResume.new(json_hash)
```