add create post link to author show page
add new post view
add new post get to post controller
add create post method to posts controller & add _errors partial to new post view
add rest of CRUD methods to posts controller
add index.erb to post view
refactor post index.erb to include links to show, edit & delete
add show.erb to post view
add fields partial for posts && add edit view for posts
refactor delete method for post controller