Collection representer

[summera]

@apotonick After running into #77,
I created a CollectionRepresenter to use in my own projects with Decorators. It makes creating collections really simple.

I updated the README with an explanation, but in short:

class BandsRepresenter < Roar::Decorator
  include Roar::Representer::JSON
  include Roar::Representer::Feature::Hypermedia
  include Roar::Rails::CollectionRepresenter
end

This creates a Bands Collection Representer using the BandRepresenter to serialize each individual resource within the collection.

Let me know what you think!

[ianks]

👍