Failed PUTs return 200

[ethanresnick]

If you PUT to a resource, and the data you're PUTting is in the right format but the db rejects it (e.g. because it fails to pass validation rules)...

1. The resource isn't actually modified in the database (good!), but
2. the server returns a 200 with the body holding the contents of the resource as it would be if the update had succeeded.

[ethanresnick]

This has been fixed. Here's the relevant line, which uses 400 for validation errors and otherwise tries to make an intelligent status code decision: https://github.com/ethanresnick/json-api/blob/master/src/adapters/Mongoose/lib.js#L20