Moved statementDescription to be in the same order as APIDocs

In the API documentation[0], the statement_description field
is specified at the end of the documentation. This commit re-orders
the declared fields in the Charge object to be closer to the same
order.

[0] https://stripe.com/docs/api/java#charge_object
Add ReceiptNumber and ReceiptEmail support

As per [0], we support receipt_number and receipt_email in the
charge object in the Stripe API. Somehow, it looks like those did
not make their way into the java bindings.

This PR adds them.

[0] https://stripe.com/docs/api/java#charge_object
Remove whitespace from end of line
Merge pull request #113 from stripe/shale/card-with-receipt-details

Add ReceiptNumber and ReceiptEmail support