Make this mock more representative of actual rake output.

spec/annotate/annotate_routes_spec.rb

@@ -19,7 +19,7 @@ describe AnnotateRoutes do
 
       before(:each) do
         File.should_receive(:exists?).with("config/routes.rb").and_return(true)
-        AnnotateRoutes.should_receive(:`).with("rake routes").and_return("bad line\ngood line")
+        AnnotateRoutes.should_receive(:`).with("rake routes").and_return("(in /bad/line)\ngood line")
         File.should_receive(:open).with("config/routes.rb", "wb").and_yield(mock_file)
         AnnotateRoutes.should_receive(:puts).with("Route file annotated.")
       end