Install Virtualbox

Actually run the installer for virtual box.
Added a cask for Satellite Eyes.
Merge pull request #367 from jacobian/satellite-eyes

Added a cask for Satellite Eyes.
add cask for growlnotify
add cask for KisMAC
support new one-arg link syntax

refs #304

going forward, casks should use

    link 'Foo.app'

rather than

    link :app, 'Foo.app'
Merge pull request #340 from ryanneufeld/patch-3

Install Virtualbox
Blender 2.67a
Merge pull request #368 from jaimeMF/blender

Blender 2.67a
Added USB Overdrive (http://www.usboverdrive.com/)
Add Subtitles cask
Merge pull request #370 from mfilej/subtitles-2.0

Add Subtitles cask
Merge pull request #369 from jacobian/usb-overdrive

Added USB Overdrive (http://www.usboverdrive.com/)
Add Jubler (Version 4.6.1) Cask
Add viscosity cask
Add Wineskin cask
Merge pull request #374 from Crazor/wineskin

Add Wineskin cask
Merge pull request #373 from moul/viscosity

Add viscosity cask
Merge pull request #372 from acollign/jubler

Add Jubler (Version 4.6.1) Cask
bump version to v0.13.0