initial commit
get ready to use rspec
get ready to use Fabrication & add some Users spec
refactor. changed file structure
add warden strategy
modify around warden spec
draft app.rb
mistook order of enable session and require
add before block to judge user logged in or not
change env['warden'] to request.env['warden'], and add use Warden::Manager block
routing rule has been changed
made drafts of views
submit buttons were missed
changed 'current_user' to 'warden.user'
add some specs around login, logout
done prototyping
add methods to User. mod some specs that had been pending
made login & signup page,  add view helpers.
change 'css/custom.css' to '/css/cutsom.css', and so on.
add pagination.