double gsub to properly get title for BootXChange

thanks to @passcod for this

lib/cask.rb

@@ -48,7 +48,7 @@ class Cask
   end
 
   def self.title
-    self.name.gsub(/([a-z\d])([A-Z])/,'\1-\2').downcase
+    self.name.gsub(/([a-zA-Z\d])([A-Z])/,'\1-\2').gsub(/([a-zA-Z\d])([A-Z])/,'\1-\2').downcase
   end
 
   attr_reader :title

test/cask_test.rb

@@ -22,4 +22,16 @@ describe Cask do
       all_casks.each { |cask| cask.must_be_kind_of String }
     end
   end
+
+  describe "title" do
+    it "converts class constant to dasherized string" do
+      PascalCasedConstant = Class.new(Cask)
+      PascalCasedConstant.title.must_equal 'pascal-cased-constant'
+    end
+
+    it "properly dasherizes constants with single letters in the middle" do
+      GamesXChange = Class.new(Cask)
+      GamesXChange.title.must_equal 'games-x-change'
+    end
+  end
 end