Getting ready for version 2.7.7:
*	Tweak - WooCommerce - Use the new endpoint URL's for gateways (http://docs.woothemes.com/document/woocommerce-endpoints-2-1/).
*	Tweak - WooCommerce - Improved backwards compatibility for WooCommerce < 2.1.0.
Merge branch 'release/2.7.7'