8c8
< if ( 'POST' != $_SERVER['REQUEST_METHOD'] ) {
---
> if ( ! in_array( $_SERVER['REQUEST_METHOD'], array( 'POST', 'OPTIONS' ) ) ) {
21,22c21,22
< require( dirname( __FILE__ ) . '/wp-load.php' );
< 
---
> require( dirname( __FILE__ ) . '/wp-load.php' );
> send_origin_headers();