Extract player class into its own file

koans/greed/lib/greed.rb

@@ -1,5 +1,4 @@
-require File.expand_path(File.dirname(__FILE__) + '/greed/dice_set')
-require File.expand_path(File.dirname(__FILE__) + '/greed/scorable')
+Dir.glob(File.dirname(__FILE__) + "/greed/*", &method(:require))
 
 # Playing Greed
 #
@@ -208,22 +207,5 @@ def self.create_players(names)
 
   end
 
-  class Player
-    def initialize(name)
-      @name = name
-      @score = 0
-    end
-
-    attr_reader :name, :score
-
-    def increment_score(score)
-      @score += score
-    end
-
-    def decrement_score(score)
-      decremented_score = @score - score
-      @score = [decremented_score, 0].max # prevent a non-negative score.
-    end
-  end
 end
 

koans/greed/lib/greed/player.rb

@@ -0,0 +1,21 @@
+module Greed
+
+  class Player
+    def initialize(name)
+      @name = name
+      @score = 0
+    end
+
+    attr_reader :name, :score
+
+    def increment_score(score)
+      @score += score
+    end
+
+    def decrement_score(score)
+      decremented_score = @score - score
+      @score = [decremented_score, 0].max # prevent a non-negative score.
+    end
+  end
+
+end