updated these versions to more closely match the original C#

GildedRose/ruby/gilded_rose.rb

@@ -1,7 +1,11 @@
 
 class GildedRose
-  def update_quality(items)
-    items.each do |item|
+  def initialize(items)
+    @items = items
+  end
+
+  def update_quality()
+    @items.each do |item|
       if item.name != "Aged Brie" and item.name != "Backstage passes to a TAFKAL80ETC concert"
         if item.quality > 0
           if item.name != "Sulfuras, Hand of Ragnaros"
@@ -46,7 +50,6 @@ class GildedRose
         end
       end
     end
-    items
   end
 end
 
@@ -62,4 +65,4 @@ class Item
   def to_s()
     "#{@name}, #{@sell_in}, #{@quality}"
   end
-end
+end

GildedRose/ruby/gilded_rose_spec.rb

@@ -5,7 +5,7 @@ describe GildedRose do
   describe "#update_quality" do
     it "does not change the name" do
       items = [Item.new("foo", 0, 0)]
-      GildedRose.new().update_quality(items)
+      GildedRose.new(items).update_quality()
       items[0].name.should == "fixme"
     end
   end