Deprecate fetchCharge as per #48

Author: cfreear

src/Gateway.php

@@ -248,8 +248,9 @@ public function void(array $parameters = array())
     }
 
     /**
+     * @deprecated 2.3.3:3.0.0 duplicate of \Omnipay\Stripe\Gateway::fetchTransaction()
+     * @see \Omnipay\Stripe\Gateway::fetchTransaction()
      * @param array $parameters
-     *
      * @return \Omnipay\Stripe\Message\FetchChargeRequest
      */
     public function fetchCharge(array $parameters = array())

src/Message/FetchChargeRequest.php

@@ -7,7 +7,9 @@
 
 /**
  * Stripe Fetch Charge Request.
- *
+ * 
+ * @deprecated 2.3.3:3.0.0 functionality provided by \Omnipay\Stripe\Message\FetchTransactionRequest
+ * @see \Omnipay\Stripe\Message\FetchTransactionRequest
  * @link https://stripe.com/docs/api#retrieve_charge
  */
 class FetchChargeRequest extends AbstractRequest

src/Message/Response.php

@@ -35,7 +35,9 @@ public function isSuccessful()
 
     /**
      * Get the charge reference from the response of FetchChargeRequest.
-     *
+     * 
+     * @deprecated 2.3.3:3.0.0 duplicate of \Omnipay\Stripe\Message\Response::getTransactionReference()
+     * @see \Omnipay\Stripe\Message\Response::getTransactionReference()
      * @return array|null
      */
     public function getChargeReference()