How do I display social media buttons on new content pages on my Drupal Commerce site?
Kickstart 2.0 Distro uses the service links function.  That's what you're seeing below the "add to cart" button.  Pretty easy fix.  Make sure the service links module is enabled and hit configure, or visit: .../admin/config/services/service-links.

At the top, you can just check the boxes on whichever content type you want these links displayed, as well as a bunch of other fun features below.

Enjoy!