How do i put Follow button of twitter on my website

put "Follow Button" of twitter on your site in easy step as follow:

1.  get login : https://dev.twitter.com/
2. Click on Follow Button 
3. write this script on your website: 

 <a href="https://twitter.com/share" class="twitter-share-button" data-lang="en">Tweet</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="https://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>

Replace share with your website name

e.g http://twitter.com/yoursitename.com