Throw an exception if normalization is failed.
changed class method to instance method
Added error messages
set format.xls and excel's xml
#68 welcome#index -> users#show
#103 show user list
remove unused file
#102 user can be removed and modifed
Fixed test failure.
add new fields to user and rename phone_number
rename phone_number in views
refactoring user transaction
move html comment parser to lib
fix error in create method
rescue for invalid cyworld url.
수정/삭제 시 메시지를 띄우고 버튼 간격 조절
라우팅 중복문제 해결
find all phonenumbers and replace them to phone_number
패턴과 댓글이 같지 않으면 이를 따로 배열로 리턴한다
#90 패턴과 댓글이 같지 않으면 이를 따로 배열로 리턴한다