Add img[src] to absolute urls

Author: cbou

lib/utils/absolute-urls.js

@@ -21,7 +21,7 @@ module.exports = absolute;
 function absolute(path, $) {
   var parts = url.parse(path);
   var remote = parts.protocol + '//' + parts.hostname;
-  $('a[href]').each(abs);
+  $('a[href], img[src]').each(abs);
 
   function abs(i, el) {
     var $el = $(el);