Add content to all product description tabs

I was wondering if there is a better way to add content to all description tabs for products. Currently I created a shortcode in functions.php:

//Product Description Tab Output
function pdto_func( $atts ){
return ‘<p>My Content</p>’;
}
add_shortcode( ‘pdto’, ‘pdto_func’ );

Then I added <?php echo do_shortcode(‘[pdto]’); ?> to the /plugins/woocommerce/templates/single-product/tabs/description.php file.
It works great but is there a better way to do something like this where I won’t have to add code to the description.php file? Can I hook in My Content somehow from functions.php?
Thanks.

http://wordpress.org/extend/plugins/woocommerce/