Add Evernote 5.6 Beta 6 Cask
user
```ruby
class EvernoteBeta < Cask
  url 'http://cdn1.evernote.com/mac-smd/prerelease/Evernote_BETA_5.6.0_Beta_6_450650.zip'
  homepage 'https://evernote.com/'
  version '5.6beta6'
  sha256 '4cdd361c873ce94ba5b3abfe98d967267644f99be700c1af1a2c56b2bfe06f54'
  link 'Evernote.app'
end
```
assistant