Easily create new CreateCustomerRequest

[dongilbert]

In order to create a new customer, you have to bring in the CreateCustomerRequest class via use, which is a little verbose (especially if you're using DI / Service Location to access your stripe instance). What do you think of adding a createCustomerRequest() method on this class - https://github.com/jlinn/stripe-api-php/blob/master/src/Stripe/Api/Customers.php#L17 - it would return new CreateCustomerRequest, but it saves time if you already have access to the stripe object.

[jlinn]

Good suggestion. Those methods have been added to the existing Api classes.

[dongilbert]

Great, thanks!