anchor.diff:                  },{
                       "id": "102",
                       "created_at": "2014-04-20T06:23:12Z",
  -                    "created_at": "2014-04-20T06:23:12Z",
  +                    "updated_at": "2014-04-20T06:23:12Z",
                       "links": {
                           "user": "102",
                           "workflow": 66,
  
positive.code:                     "id": "942",
                      "roles": ["collaborator"],
                      "created_at": "2014-03-20T06:23:12Z",
                      "created_at": "2014-04-21T08:22:22Z",
                      "links": {
                          "user" : "30",
                          "project": "11"
  
negative.code: ProjectRoles are returned as an array under *project_roles*.
  
  + Model (application/vnd.api+json)
  
      + Body
  
              {
                  "links": {
                      "project_roles.user": {
  