Read more button for Genesis posts

Step one:
Go to genesis settings and make the display of content archives “Entry excerpts” as follows

Step Two:
Copy the code below and paste it to functions.php of genesis child theme

//READ MORE BUTTON

/* Append ellipses to excerpts and then show "Read More"  button for manual & automatic excerpts.
     * @param type $text
     * @return string
*/
     function custom_excerpt($text) {
    // $text= substr_replace($text,"...",strpos($text, "</p>"),0);
    $excerpt = $text . '<a href="' . get_permalink() . '"><button class="read-more-btn" type="button" value="read_more">Read More</button></a>';
    return $excerpt;
    }
    add_filter('the_excerpt', 'custom_excerpt');

/* User defined excerpt length.
   * @param type $length
   * @return int
*/
   function custom_excerpt_length($length) {
     return 65;
   }
   add_filter('excerpt_length', 'custom_excerpt_length');