“Development Version” Link

Hi guys,

I’ve seen that there’s a “Development Version” link on my plugin’s download page (http://wordpress.org/extend/plugins/wordpress-popular-posts/download/). Not sure how it works, though.

What’s the folder WordPress.org uses to build that zip file (the beta version file)? Where should I put my beta files so WordPress.org serves them to anyone who wants to download the development version of my plugin?

Thanks in advance for your help, people.