Add Acquia Dev Desktop 2.

Acquia Dev Desktop 2 is a free app that allows you to run and develop
Drupal sites locally on your computer and optionally hos them using
Acquia Cloud. Use Acquia Dev Desktop to evaluate Drupal, add and test
other Drupak modules, and develop sites while on a plane or away from
an internet connection.

Add version and sha256 to DevDesktop.

The current version of Acquia Dev Desktop is 2-2015-04-03. Also was
added the uninstall script.

Casks/acquia-dev-desktop.rb

@@ -0,0 +1,19 @@
+cask :v1 => 'acquia-dev-desktop' do
+  version '2-2015-04-03'
+  sha256 '958d23385827695f3bc79d3d5b78995fdb9c5dfa5528d2b03efe321aa8fb008b'
+
+  url "http://www.acquia.com/sites/default/files/downloads/dev-desktop/AcquiaDevDesktop-#{version}.dmg"
+  name 'Acquia Dev Desktop'
+  homepage 'https://www.acquia.com/products-services/dev-desktop'
+  license :gratis
+
+  installer :script => 'Acquia Dev Desktop Installer.app/Contents/MacOS/installbuilder.sh',
+            :args => ['--mode' , 'unattended', '--unattendedmodeui', 'none'],
+            :sudo => true
+
+  uninstall :script => {
+                        :executable => '/Applications/DevDesktop/uninstall.app/Contents/MacOS/installbuilder.sh',
+                        :args => ['--mode' , 'unattended', '--unattendedmodeui', 'none'],
+                        :sudo => true,
+                       }
+end