Add Hydra 1.0 Beta 6
user
```ruby
class Hydra < Cask
  version '1.0 beta 6'
  sha256 'b1d16db3b6a38b85c7a60b81e1eab98c47ca417263672847e73021df885c16cb'

  url 'https://github.com/sdegutis/hydra/releases/download/v1.0.b6/Hydra-1.0.0.b6.app.tar.gz'
  homepage 'https://github.com/sdegutis/hydra'

  link 'Hydra.app'
end
```
assistant