Repair swamp

unfortunately the URL has to be found using its alt description

plugins/swamp/extract.js

@@ -1,5 +1,5 @@
 function(page) {
-    var regex = /<img[^>]*src='(strips\/[^']*)'/;
+    var regex = /<img[^>]+src="([^"]+)"[^>]+alt="Swamp\s+Cartoon\s+of\s+the\s+Day/;
     var match = regex.exec(page);
     return match[1];
 }