Add basic JSON option to brew cask

$ brew cask info --json <cask>

Library/Homebrew/cask/lib/hbc/cask.rb

@@ -129,5 +129,26 @@ module Hbc
         odebug "Cask instance method '#{method}':", send(method).to_yaml
       end
     end
+
+    def to_hash
+      hsh = {
+        "name" => name,
+        "homepage" => homepage,
+        "url" => url,
+        "appcast" => appcast,
+        "version" => version,
+        "sha256" => sha256,
+        "artifacts" => artifacts,
+        "caveats" => caveats,
+        "depends_on" => depends_on,
+        "conflicts_with" => conflicts_with,
+        "container" => container,
+        "gpg" => gpg,
+        "accessibility_access" => accessibility_access,
+        "auto_updates" => auto_updates
+      }
+
+      hsh
+    end
   end
 end

Library/Homebrew/cask/lib/hbc/cli/info.rb

@@ -1,17 +1,26 @@
+require "json"
+
 module Hbc
   class CLI
     class Info < AbstractCommand
+      option "--json", :json, false
+      
       def initialize(*)
         super
         raise CaskUnspecifiedError if args.empty?
       end
 
       def run
+        if json?
+          json = casks.map(&:to_hash)
+          puts JSON.generate(json)
+        else
           casks.each do |cask|
             odebug "Getting info for Cask #{cask}"
             self.class.info(cask)
           end
         end
+      end
 
       def self.help
         "displays information about the given Cask"