CRUD through HTTP is a good step forward to using resources and becoming RESTful. Another step further into it is to make use of hypermedia-based services and the Restfulie gem allows you to do it very quickly.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
Atom entries now get a default destroy action if the 'self' link exists. Support was added for is_successful? and much more. A feature list is shown in the Web page. Support for the can? method on the server side was added. Extra headers are supported everywhere. Default controller update is supported. A new sample application was added. A twitter example was added. A render_collection method that supports Atom feeds was added. Custom etag support and cache_info were added. Unmarshalling with child elements that do not exist is supported. Custom behavior is allowed for specific response codes.