Fix config.ru to work with current opal and opal-spec
Fix config.ru to work with current opal and opal-spec

wied03/opal-jquery,catprintlabs/opal-jquery-beta-minus,opal/opal-jquery,xuwupeng2000/opal-jquery,opal/opal-jquery,xuwupeng2000/opal-jquery,wied03/opal-jquery