ismasan/oat — pull request #45 by apsoto (2014-08-23 21:37:00+00:00)
Title: add the required rel attribute for Siren sub-entities

Siren requires a *rel* attribute for sub-entities.

I ended up adding a `rel` method to the siren adapter. Since only the Siren adapter is 'calling' this method, I wasn't sure if I should add a similar `rel` method to the other adapters as a no-op.

Let me know if you think.