WIP: Hide Gist meta footer via javascript, show on hover.

gist-hide-footer.js

     $('.gist').each(function() {
         var $gist = $(this);
         var $gistMeta = $gist.find('.gist-meta');
         var width = $gistMeta.width();
         $gistMeta.css('position', 'absolute').width(width).hide();
         var $gistData = $gist.find('.gist-data');
         $gistData.hover(function() {
            $gistMeta.show();
         }, function() {
            $gistMeta.hide();
         });
     });