refs #101 modified the setting files
refs #101 add spec of devise
refs #101 add gem 'spork' for test
refs #101 modified spec_helper.rb for devise test helper
refs #101 modified test comments
refs #101 devise sign up and sign in
refs #101 modified routes.rb, but don't sign in and sign up
refs #101 modified spec of controllers
refs #106 internationalization of title
refs #106 add gem 'twitter-bootstrap-rails' to Gemfile
refs #106 'rails generate bootstrap:install less'
refs #106 'rails generate boostrap:layout application fixed', and modified config
refs #100 set the spec_helper.rb
refs #106 'rails generate bootstrap:layout application fixed'
refs #106 modified the bootstrap layouts
refs #102 set the Gemfile, 'bundle install' and 'bundle update'
refs #101 modified internationalization files for devise