Install Virtualbox

Actually run the installer for virtual box.
Upgrade from `0.30` to `0.34`. Add `link` line.
Merge pull request #364 from jfsiii/feature-update-hipchat

Upgrade HipChat from `0.30` to `0.34`. Add `link` line.
Merge branch 'sketchup' of https://github.com/acollign/homebrew-cask into acollign-sketchup
Removed blank line before 'link'
removed sketchup, pending further changes
Add Sweet Home 3D (Version 4.0) Cask
Merge pull request #366 from acollign/sweet-home-3d

Add Sweet Home 3D (Version 4.0) Cask
renamed sweet-home-3d to not make it confusing when installing/auditing
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