Avoid polluting namespace

lib/refinements/object_persistence.rb

@@ -0,0 +1,11 @@
+module ObjectPersistence
+  refine Object do
+    def save_to_file(filename)
+      File.open(filename, "w+") { |f| f << Marshal.dump(self) }
+    end
+
+    def self.load_from_file(filename)
+      Marshal.load(File.read(filename))
+    end
+  end
+end