Multiple custom options can be created at once for a product
Multiple custom options can be created at once for a product

POST an array of objects to `/api/rest/products/:product/options`.
If one option fails validation then no options are created.
This is because API2 server does not preserve order of success messages
mixed with error messages so it is vague when performing _multicreate.
clockworkgeek/Magento-Extra-RESTful