became adventurous and took at stab at generating atom feeds. getting close

i got curious about generating rss feeds and found [this answer](http://stackoverflow.com/questions/4827232/generating-rss-feed-in-rails-3) on SO. After reading through the ```atom vs rss``` debate I went with atom bcs why not, I have no dog in this fight. 

i followed the guys answer pretty closely but it's not working entirely. help?

obviously if you have other suggestions as to how i should tackle do tell!