Add Kobo.app for Japanese version (3.5.2)
user
```ruby
class KoboJp < Cask
  url 'http://download.kobobooks.com/desktop/RakutenBooks/KoboSetup.dmg'
  homepage 'http://kobo.rakuten.co.jp'
  version 'latest'
  no_checksum
  link 'Kobo.app'
end
```
assistant