Rest relationship route

[Thiryn]

For a resource with relationships, it should be possible to get a relationship route

       "author": {
        "links": {
          "self": "http://example.com/articles/1/relationships/author",
          "related": "http://example.com/articles/1/author"
        },
        "data": { "type": "people", "id": "9" }
      }

At another extent, the JSONAPI does not provides any specifications on routing. I think it'd be nice if we could build REST routes for nested/related resources see this post to a better example of what I mean.