Adding support for more than just HTML
Adding support for more than just HTML

We're pulling images now.  Just checking their MIME types for now.

Future expectation is to add support for the HTTP range header so
we limit how much get grab from the remote server before feeding into
in image metadata parser.  I would also like a better way to refactor
how the 405 response code (HEAD request not supported) is treated, too.

chuckination/trickbot