add filters for bsg featured image size and attr
add filters for bsg featured image size and attr

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