Fixes annotate_routes

lib/tasks/annotate_routes.rake

 desc "Prepends the route map to the top of routes.rb"
 task :annotate_routes do
-  require File.join(File.dirname(__FILE__), '..', 'annotate/annotate_models')
+  require File.join(File.dirname(__FILE__), '..', 'annotate/annotate_routes')
   AnnotateRoutes.do_annotate
 end