Add VLC.app 3.0.0-git (nightly build)
user
```ruby
class VlcNightly < Cask
  version 'latest'
  sha256 :no_check

  url 'http://nightlies.videolan.org/build/macosx-intel/last'
  homepage 'http://www.videolan.org/vlc/'

  link 'vlc-3.0.0-git/VLC.app'
end
```
assistant