Fixing a bug that was causing some number Koans to be presolved.

Rakefile

@@ -21,6 +21,7 @@ module Koans
     line = line.gsub(/\b____\([^\)]+\)/, "____")
     line = line.gsub(/\b___\([^\)]+\)/, "___")
     line = line.gsub(/\b__\([^\)]+\)/, "__")
+    line = line.gsub(/\b_n_\([^\)]+\)/, "_n_")
     line = line.gsub(%r(/\#\{__\}/), "/__/")
     line
   end

koans/about_class_methods.rb

@@ -19,11 +19,11 @@ class AboutClassMethods < EdgeCase::Koan
 
   def test_objects_have_methods
     fido = Dog.new
-    assert fido.methods.size > _n_(30)
+    assert fido.methods.size > _n_
   end
 
   def test_classes_have_methods
-    assert Dog.methods.size > _n_(40)
+    assert Dog.methods.size > _n_
   end
 
   def test_you_can_define_methods_on_individual_objects

koans/about_scope.rb

@@ -74,6 +74,6 @@ class AboutScope < EdgeCase::Koan
 
   def test_you_can_get_a_list_of_constants_for_any_class_or_module
     assert_equal __, Jims.constants
-    assert Object.constants.size > _n_(10)
+    assert Object.constants.size > _n_
   end
 end