add fixtures
add item repository
add book_item_repository_spec
remove imcomplete specs
set default_locale ja
add lend#regist
include bootstrap
i18n
modify users view
chenge operations into check-ins and check-outs
classify check_ins check_outs
move scan regist action
create login form
modify login logout
book search
change auth
chenge book index
modify views
get twitter image
improve get twitter image