Add <author> and <guid> to RSS feed
Add <author> and <guid> to RSS feed

From http://blogs.law.harvard.edu/tech/rss
  author - Email address of the author of the item.
  guid   - A string that uniquely identifies the item.

Signed-off-by: Yasushi SHOJI <afa9ca3be149447780c2f7b524d61ed3d3db63f9@atmark-techno.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git