Using jshint 1.0.0
JSHint resource spec.
Remove broken link to the support folder.
Checking to see if data is present before we begin property changes.

Whenever we receive data from the API, we assume that data is the
most recent information and try to update our local copy. If the
`data` attribute is undefined for some reason (the model may be
destroyed) we can not successfully deep merge the new data.
Merge pull request #10 from zendesk/josh/update_with_api_data

 Checking to see if data is present before we begin property changes.