First cut of simple atom parser for #587.

git-svn-id: http://svn.winnow.peerworks.org/trunk/atom@2603 
f9e11ea3-fe04-0410-b62f-af45e3a9b5a1

• History.txt
• License.txt
• Manifest.txt
• README.txt
• Rakefile
• config/hoe.rb
• config/requirements.rb
• lib/atom.rb
• lib/atom/version.rb
• log/debug.log
• script/destroy
• script/generate
• script/txt2html
• setup.rb
• spec/atom_spec.rb
• spec/fixtures/complex_single_entry.atom
• spec/fixtures/linktests.xml
• spec/fixtures/multiple_entry.atom
• spec/fixtures/simple_single_entry.atom
• spec/spec.opts
• spec/spec_helper.rb
• tasks/deployment.rake
• tasks/environment.rake
• tasks/rspec.rake
• tasks/website.rake
• website/index.html
• website/index.txt
• website/javascripts/rounded_corners_lite.inc.js
• website/stylesheets/screen.css
• website/template.rhtml