multiple categories

in /includes/functions.php you need to change one line to be able to select multiple categories.
(code starts on line 252)

// Limit posts based on category.
if ( ! empty( $args[‘cat’] ) ) {
########## CHANGE THIS LINE ##########
$query[‘category__in’] = $args[‘cat’];
}

########## CHANGE TO THIS ##########
$query[‘category__in’] = explode(“,”,$args[‘cat’]);