add markup and html id for skip-to-main-content link
add markup and html id for skip-to-main-content link

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