Suggestion: Show actually parsed URL

[jneubert]

It could be helpful for users to show the actually parsed URL (which may be different from the user input when content negotiation is involved - see e.g. #28) as part of the page.

[gkellogg]

It should be able to show the final URL after redirections. At one time, it actually showed the parser(s) used to extract the data as well. Note that http://rdf.greggkellogg.net/distiller uses essentially the same parser, and it does indicate the parser used as a result of content-negotiation.

[gkellogg]

Unfortunately, no good way to show the redirected URL without hacking some internals. I'll leave this open for future consideration as we work on RDF.rb 2.0.

I did make it so the reader used is shown in the UI, which I'll release shortly.