Refactored edd-ajax.js for #688
Refactored edd-ajax.js for #688
Refactored edd_ajax_add_to_cart() for #688
Refactored edd_item_in_cart() for #688
Refactored purchase button display for #688
Merge branch 'master' of github.com:pippinsplugins/Easy-Digital-Downloads