add bsg_add_markup_class call to genesis_attr_site-header for custom class on header
add bsg_add_markup_class call to genesis_attr_site-header for custom class on header

salcode/bootstrap-genesis,salcode/bootstra.386-genesis,bryanwillis/bootstrap-genesis,salcode/bootstrap-genesis,michaelcarwile/bootstrap-genesis,michaelcarwile/bootstrap-genesis,bryanwillis/bootstrap-genesis,salcode/bootstra.386-genesis,michaelcarwile/bootstrap-genesis,salcode/bootstrap-genesis,bryanwillis/bootstrap-genesis