change ignore file
change database setting
add song model
add language module in song
add language and parts module, validate of name, time
add song web link
add annotate gem
add index
add song search module
add rspec and create song
add song writers
Merge pull request #1 from SmileZero/feature/song

Song, SongWriter, SongWebLink
add gem to fix primary key type
add user api
annonate
Merge pull request #2 from SmileZero/feature/user

Feature/user
add about info page and comment
hide reply
change header about link
Merge pull request #3 from SmileZero/feautre/about_page

Feautre/about page