Add cask for Twine v1.4.1
user
```ruby
class Twine < Cask
  url 'http://twinery.org/downloads/twine_1.4.1_osx.zip'
  homepage 'http://twinery.org/'
  version '1.4.1'
  sha1 '7113f360bbe6b5246001f3cc0083fe65fe26f552'
  link 'Twine.app'
end
```
assistant