Add Fission v2.2
Added Nicecast

Nicecast is the easiest way to broadcast music from your Mac. Broadcast
to listeners around the world. Nicecast can help you create your own
internet radio station or allow you to listen to your iTunes Music
Library from anywhere in the world!
Add cask for Silverback
Merge pull request #3569 from kevinSuttle/silverback

Add cask for Silverback
Merge pull request #3565 from alebcay/nicecast

Added Nicecast
Merge pull request #3563 from macprince/fission

Add Fission v2.2