Add Adobe Air Beta 26.0. (#3915)

Casks/adobe-air-beta.rb

@@ -0,0 +1,32 @@
+cask 'adobe-air-beta' do
+  version '26.0'
+  sha256 '916ce21b6180133de686f553c7fa492edc67541aebb657301859a3d0ce1195dc'
+
+  # fpdownload.macromedia.com was verified as official when first introduced to the cask
+  url 'https://fpdownload.macromedia.com/pub/labs/flashruntimes/air/AdobeAIR.dmg'
+  name 'Adobe AIR Beta'
+  homepage 'http://labs.adobe.com/downloads/air.html'
+
+  installer script: {
+                      executable: 'Adobe AIR Installer.app/Contents/MacOS/Adobe AIR Installer',
+                      args:       %w[-silent],
+                      sudo:       true,
+                    }
+
+  uninstall script: {
+                      executable: 'Adobe AIR Installer.app/Contents/MacOS/Adobe AIR Installer',
+                      args:       %w[-uninstall],
+                      sudo:       true,
+                    },
+            rmdir:  [
+                      '/Applications/Adobe/Flash Player/AddIns',
+                      '/Applications/Adobe/Flash Player',
+                      '/Applications/Adobe',
+                    ]
+
+  zap delete: [
+                '~/Library/Application Support/Adobe/AIR',
+                '~/Library/Caches/com.adobe.air.ApplicationInstaller',
+              ],
+      rmdir:  '~/Library/Application Support/Adobe/'
+end