merge revision(s) 40475,40480,40481:

	* lib/rss/atom.rb: Documentation for RSS::Atom based on a patch by
	  Michael Denomy

	* lib/rss/maker.rb: Documentation for RSS::Maker also by @mdenomy

	* lib/rss/maker.rb (RSS::Maker): Fix indent of document comment.

	* lib/rss/atom.rb (RSS::Atom::Entry): Fix indent of document comment.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40483 b2dd03c8-39d4-4d8f-98ff-823fe69b080e