addition of default array value to the options.
Requires the Woocommerce/WooCommerce class before registering the other hooks and loading the other classes.  The reason for the OR is because in the recent version in woocommerce, the case changed. https://github.com/woothemes/woocommerce/commit/a90b9c5df5dbb1482cbfef01c5c3001de26d7093#L1L22  

#fixes 3