RSpec DSL should not pollute the Object namespace

lib/capybara/rspec/features.rb

@@ -9,7 +9,7 @@ module Capybara
   end
 end
 
-def feature(*args, &block)
+def self.feature(*args, &block)
   options = if args.last.is_a?(Hash) then args.pop else {} end
   options[:capybara_feature] = true
   options[:type] = :request

spec/rspec/features_spec.rb

@@ -24,6 +24,10 @@ feature "Capybara's feature DSL" do
   scenario "runs background" do
     @in_background.should be_true
   end
+  
+  scenario "doesn't pollute the Object namespace" do
+    Object.new.respond_to?(:feature, true).should be_false
+  end
 end
 
 feature "Capybara's feature DSL with driver", :driver => :culerity do