Added model for posts as example
Updated for merge
Added search and paginate to posts.  wrote seed generator for posts
added search/result count.  added link on right to welcome the user, but that style sucks.
Modified ability.rb for roles.
Added link helpers for the index and show.
Removed spec test for controler
added better post seed data
Fixed up navigation a bit.  Good example at https://www.gemlou.pe
Added tabbing example in posts#show, updated user_steps