Add a warning to our cache_rendered_data method.
Add a warning to our cache_rendered_data method.

ralphbean/moksha,ralphbean/moksha,lmacken/moksha,lmacken/moksha,mokshaproject/moksha,mokshaproject/moksha,pombredanne/moksha,pombredanne/moksha,mokshaproject/moksha,ralphbean/moksha,lmacken/moksha,pombredanne/moksha,mokshaproject/moksha,pombredanne/moksha