upgrade ember
utilize the new Computed#readOnly
prefer public DI api on the application instance when possible.
bump ember test-version
Merge pull request #819 from stefanpenner/upgradeEmberAndReadOnly

Upgrade ember so Computed#readOnly is available
Support create/update/delete
Updated README with a little more explanation about the Adapters and a link back to the guides to read more about the RESTAdapter.
Merge pull request #834 from johnmcdowall/master

Updated README with a little more explanation about the Adapters and a link back to the guides to read more about the RESTAdapter.