change root to posts#index and add post & page resources
genereate pages controller
generate posts controller
add method to show published posts
add title and sortable posts helper
create post views
install rails admin
rake db:migrate
add Rich to Gemfile
install rich wysiwyg editor
update rich configuration and toolbar settings
add rails_admin config for page model
fix rails_admin version at 0.5.0
add rails_admin & rich fixes for protected attributes