lexik/LexikPayboxBundle — pull request #1 by fabienpomerol (2012-12-11 21:52:31+00:00)
Title: Added  Subscription Cancellation 

There is a missing feature on this bundle : a way to cancel a subscription

Paybox offer a way to cancel an existing subscription by a server/server call. (Page 26 of the integration doc).

This PR fix this problem by adding a transport layer based on the PlemiPayboxBundle. For now I just backported the CurlTransport. But we could backport the shell too.

The cgi to call is not really normalized like the normal cgi. He expected variables with different names...

So i created a CancellationRequest and CancellationParameterResolver in order to handle this specific params.

The use case is the following :

```php
$paybox = $this->get('lexik_paybox.request_cancellation_handler');
$response = $paybox->cancel('my_paybox_reference');
```

This PR is fully tested.

Tell me if there is some enhancement to do.