Add the author to the item in an rss feed.

The author was missing from the generated rss feed's items.  This adds it
back, but only uses the name for now.
Fix the tests to work correctly.

It appears that go's xml package changed the text it would output.  It is
semantically the same, so just update the expected output.
Merge pull request #2 from MJDSys/FixMissingRssAuthor

Add the author to the item in an rss feed.