Collect coding violations according to metric_fu
Implement RSS::Rss::Channel#eql?
Link attributes of items are required
Implement RSS::Rss::Channel::Item#eql?
Append vim swap file in .gitignore
Implement RSS::Rss#eql?
Add RSS related methods
Add Reader#new_items
Reader#check returns new items
Modify the return value of Reader#check to array of hash
Remove unused code to release-0.0.1