Add Fender Amp Drivers Cask.
Add Fender FUSE Cask.
Add Wallpaper Wizard Cask.
Merge pull request #1238 from gillesfabio/add-wallpaper-wizard-cask

Add Wallpaper Wizard Cask.
Add Dash Cask.
Merge pull request #1234 from gillesfabio/add-dash-cask

Add Dash Cask.
ControlPlane 1.4.0
DSP Radio 1.4.1
Merge pull request #1235 from gillesfabio/add-fender-amp-drivers-cask

Add Fender Amp Drivers Cask.
Merge pull request #1236 from gillesfabio/add-fender-fuse-cask

Add Fender FUSE Cask.
Add NetShade cask

Adds a cask for NetShade, an anonymous proxy management tool.
Add Mono Framework MRE (Runtime) Cask.
Add Mono Framework MDK (SDK) Cask.
Merge pull request #1241 from gillesfabio/add-mono-mre-cask

Add Mono Framework MRE (Runtime) Cask.
Merge pull request #1242 from gillesfabio/add-mono-mdk-cask

Add Mono Framework MDK (SDK) Cask.
Add Xamarin Studio (MonoDevelop) Cask.
Merge pull request #1243 from passelin/netshade

Add NetShade cask
Merge pull request #1244 from gillesfabio/add-xamarin-studio-cask

Add Xamarin Studio (MonoDevelop) Cask.
Add Akai LPK25 Keyboard Editor Cask.
Add new cask for Prey project.

This cask install the batch version of Prey package, as detailed in:
http://support.preyproject.com/kb/installation/how-to-deploy-prey-in-batch-mode-mac-os

As it requires an API key to be installed, a warning is displayed to the
user with an explanation on how to fix the issue.

Also added -E option to sudo invocation so environment variables can be
passed to the installer.

closes #953

Signed-off-by: phinze <paul.t.hinze@gmail.com>