How to Add Twitter’s Official Tweet Button in WordPress

<script src="http://platform.twitter.com/widgets.js" type="text/javascript"></script>
   <a href="http://twitter.com/share"
      data-url="<?php the_permalink(); ?>"
      data-via="wpbeginner"
      data-text="<?php the_title(); ?>"
      data-related="syedbalkhi:Founder of WPBeginner"
      data-count="vertical">Tweet</a>