For Climbur.com, built on the latest versions of WP and PL, I want to use the Markerly code for copy/paste sharing. I need to add the "markerly-exclude-image" class to the thumbnail images on the homepage (I only want the images to have the sharing tools in the actual posts themselves, not in the previews). What page and element do I need to add this class to in order to get this to work? I thought it was index.php but that looks basically empty. Any guidance here would be great!