```ruby
class PathFinder < Cask
  url 'http://get.cocoatech.com/PF6_LION.zip'
  homepage 'http://www.cocoatech.com/pathfinder/'
  version '6.1.5'
  sha1 '5c05b1f4b9c9f9e0cd31d58f1e3c3417cf1ef3c8'
end
```

Fix PathFinder cask version and add link
user
```ruby
class PathFinder < Cask
  url 'http://get.cocoatech.com/PF6_LION.zip'
  homepage 'http://www.cocoatech.com/pathfinder/'
  version 'latest'
  no_checksum
  link 'Path Finder.app'
end
```
assistant