```ruby
class Papers < Cask
  url 'http://www.papersapp.com/papers/download/mac'
  homepage 'http://www.papersapp.com/papers/'
  version 'latest'
  no_checksum
  link 'Papers2.app'
end
```

Fix link for Papers 2
user
```ruby
class Papers < Cask
  url 'http://www.papersapp.com/papers2/download'
  homepage 'http://www.papersapp.com/papers/'
  version '2'
  no_checksum
  link 'Papers2.app'
end
```
assistant