move app secret token to application.yml
initial commit  post model
add scss extension to application.css
create posts controller#index action
install devise
create devise user model
basic layout styling
set root_path to posts#index
add login and logout links
add posts controls when user is logged
add launchy gem
posts new and create actions
style posts list
bugfix: tags split
restrict access to some post actions
implement posts#show
extract post form to partial
implement posts#edit
basic styling for posts#show
bugfix: update and edin action should render form on error