```ruby
class BackInTime < Cask
  url 'http://www.tri-edre.com/pub/files/backintime203.dmg'
  homepage 'http://www.tri-edre.fr/english/backintime.html'
  version '2.0.3'
  sha1 '3c30818d789f5b7da9645f7dd2784b7183f1caf1'
end
```

Update Back-In-Time to v. 2.3.0 and add link
user
```ruby
class BackInTime < Cask
  url 'http://www.tri-edre.com/pub/files/backintime2.dmg'
  homepage 'http://www.tri-edre.fr/english/backintime.html'
  version '2.3.0'
  sha1 'c2ce8ec9c869474dc10c5299033515252c8a4f41'
  link 'Back-In-Time 2.app'
end
```
assistant