Cannot see zip file for animation nodes downloaded add-on?

Hi, everyone! I was trying to figure out how to install the animation nodes add-on by JacquesLuke for blender 2.82 on my iMac, but for some reason I can’t find a zip file to select to install in the Add-Ons tab in Blender’s Preferences. The only thing I can find is a collection of .py files grouped together in an unzipped file in the Downloads, as you can see in the screenshot below. Does that mean it unzips all the files right after downloading it? Would I be able to turn it back into a .zip file or will this mess with the add-on’s performance? If anyone knows what’s going on with this file, please let me know.