Provide full resource on on delete/update actions

**Issue:** https://github.com/fs/rails-base-api/issues/94
**Examples:** https://github.com/fs/rails-base-api/pull/108
I really don't think we should not introduce new methods when pathing existion class from Rails.
I prefer just overwrite `api_behavior`

```ruby
if post?
  display(resource, status: :created, location: options[:location]
else
  display(resource, status: :ok, location: options[:location]
end
```