Improved some of the code examples in the docblocks

Author: delatbabel

src/Omnipay/Common/AbstractGateway.php

@@ -247,15 +247,19 @@ public function supportsUpdateCard()
      * Example:
      *
      * <code>
-     *   class myRequest extends \Omnipay\Common\Message\AbstractRequest {};
+     *   class MyRequest extends \Omnipay\Common\Message\AbstractRequest {};
      *
-     *   class myGateway extends \Omnipay\Common\AbstractGateway {
+     *   class MyGateway extends \Omnipay\Common\AbstractGateway {
      *     function myRequest($parameters) {
-     *       $this->createRequest('myRequest', $parameters);
+     *       $this->createRequest('MyRequest', $parameters);
      *     }
      *   }
      *
-     *   $myRequest = myGateway->myRequest($someParameters);
+     *   // Create the gateway object
+     *   $gw = Omnipay::create('MyGateway');
+     *
+     *   // Create the request object
+     *   $myRequest = $gw->myRequest($someParameters);
      * </code>
      *
      * @see \Omnipay\Common\Message\AbstractRequest

src/Omnipay/Common/Message/AbstractRequest.php

@@ -28,15 +28,19 @@
  * Example -- creating a request:
  *
  * <code>
- *   class myRequest extends \Omnipay\Common\Message\AbstractRequest {};
+ *   class MyRequest extends \Omnipay\Common\Message\AbstractRequest {};
  *
- *   class myGateway extends \Omnipay\Common\AbstractGateway {
+ *   class MyGateway extends \Omnipay\Common\AbstractGateway {
  *     function myRequest($parameters) {
- *       $this->createRequest('myRequest', $parameters);
+ *       $this->createRequest('MyRequest', $parameters);
  *     }
  *   }
  *
- *   $myRequest = myGateway->myRequest($someParameters);
+ *   // Create the gateway object
+ *   $gw = Omnipay::create('MyGateway');
+ *
+ *   // Create the request object
+ *   $myRequest = $gw->myRequest($someParameters);
  * </code>
  *
  * Example -- validating and sending a request: