Do something meaningful with non-HTML resources, e.g. Atom/RSS feeds

[chrisnewtn]

Options:

• Exclude all non-HTML resources
• Include non-HTML resources, but don't attempt to verify them
• Include non-HTML resources, and add functionality to verify known types like Atom and RSS (e.g. use <link rel="alternate">

Include MIME-type in item object in the response, and/or indicate if resource was actually parsed.