Adding "object" support to collection+json

object-ext.js

// sample links array
{
  "collection" :
  {
    "version" : "1.0",
    "href" : URI,
    "items" :
    [
      {
        "href" : URI,
        "object" : {}, // <-- arbitrary object graph
        "data" : [ARRAY],
        "links" : [ARRAY]
      }
    ]
  }
}