Update installer script - 3 casks (#3613)

Casks/adobe-photoshop-cs6.rb

@@ -11,8 +11,10 @@ cask 'adobe-photoshop-cs6' do
   name 'Adobe Photoshop CS6' # name must match directory in dmg for later reference
   homepage 'https://helpx.adobe.com/x-productkb/policy-pricing/cs6-product-downloads.html'
 
-  installer script: "#{staged_path}/#{name.join}/Install.app/Contents/MacOS/Install",
-            args:   ['--mode=silent', "--deploymentFile=#{staged_path}/#{name.join}/Deployment/en_US_Deployment.xml"]
+  installer script: {
+                      executable: "#{staged_path}/#{name.join}/Install.app/Contents/MacOS/Install",
+                      args:       ['--mode=silent', "--deploymentFile=#{staged_path}/#{name.join}/Deployment/en_US_Deployment.xml"],
+                    }
 
   preflight do
     system_command '/usr/bin/killall',

Casks/anaconda2.rb

@@ -9,8 +9,10 @@ cask 'anaconda2' do
   depends_on macos: '>= :lion'
   container type: :naked
 
-  installer script: "Anaconda2-#{version}-MacOSX-x86_64.sh",
-            args:   ['-b']
+  installer script: {
+                      executable: "Anaconda2-#{version}-MacOSX-x86_64.sh",
+                      args:       ['-b'],
+                    }
 
   preflight do
     set_permissions "#{staged_path}/Anaconda2-#{version}-MacOSX-x86_64.sh", '+x'

Casks/miniconda2.rb

@@ -10,8 +10,10 @@ cask 'miniconda2' do
   depends_on macos: '>= :lion'
   container type: :naked
 
-  installer script: 'Miniconda2-latest-MacOSX-x86_64.sh',
-            args:   ['-b']
+  installer script: {
+                      executable: 'Miniconda2-latest-MacOSX-x86_64.sh',
+                      args:       ['-b'],
+                    }
 
   uninstall delete: '~/miniconda2'