If you Want to display “Read more.. ” link in wordpress excerpt withouttag put the following code in function.php file of your theme:

// Puts link in excerpts more tag
function excerpt_read_more($more) {
global $post;
return "<a class="readmore" href="'. get_permalink($post->ID) . '"> Read more...</a>";
}
add_filter('excerpt_more', 'excerpt_read_more');