Move Add to Cart Button in eCommerce Add-On
In the properties.php, there is a line that calls the getProductName() function. Copy it and place it in the display.php. Find the cart button code in display.php and move it to right below the getProductName() (or where ever you want to place it).
NOTE: This will make the Product Name hard coded and you can't control it from the window if you want to show it or not.
Hope that helps! Good luck! :)