Update README.md

Trimmed usage example section to only keep the links to the dev center sample codes.

Author: Vyoam

README.md

@@ -63,64 +63,7 @@ Apart from this README, you can find details and examples of using the SDK in th
 - [Developer Center Reference](http://developer.authorize.net/api/reference/index.html)
 - [Github Sample Code Repositories](http://developer.authorize.net/api/samplecode/), [php](https://github.com/AuthorizeNet/sample-code-php)
 
-### Quick Usage Example (with Charge Credit Card - Authorize and Capture)
-- Save the below code to a php file named, say, `charge-credit-card.php`
-- Open command prompt and navigate to your sdk folder
-- Update dependecies - e.g., With composer, type `composer update`
-- Type `php [<path to folder containing the php file>\]charge-credit-card.php`
-
-```php
-require 'vendor/autoload.php';
-/* provide full path to the sdk in the above code, if you want to run it from some place other than the sdk folder
-e.g. if sdk is in c:\anet-sdk-php,
-require 'c:/anet-sdk-php/vendor/autoload.php'; */
-use net\authorize\api\contract\v1 as AnetAPI;
-use net\authorize\api\controller as AnetController;
-define("AUTHORIZENET_LOG_FILE", "phplog");
-
-// Common setup for API credentials
-$merchantAuthentication = new AnetAPI\MerchantAuthenticationType();
-$merchantAuthentication->setName("556KThWQ6vf2");
-$merchantAuthentication->setTransactionKey("9ac2932kQ7kN2Wzq");
-
-// Create the payment data for a credit card
-$creditCard = new AnetAPI\CreditCardType();
-$creditCard->setCardNumber( "4111111111111111" );
-$creditCard->setExpirationDate( "2038-12");
-$paymentOne = new AnetAPI\PaymentType();
-$paymentOne->setCreditCard($creditCard);
-
-// Create a transaction
-$transactionRequestType = new AnetAPI\TransactionRequestType();
-$transactionRequestType->setTransactionType( "authCaptureTransaction"); 
-$transactionRequestType->setAmount(151.51);
-$transactionRequestType->setPayment($paymentOne);
-
-$request = new AnetAPI\CreateTransactionRequest();
-$request->setMerchantAuthentication($merchantAuthentication);
-$request->setTransactionRequest( $transactionRequestType);
-$controller = new AnetController\CreateTransactionController($request);
-$response = $controller->executeWithApiResponse( \net\authorize\api\constants\ANetEnvironment::SANDBOX);
-
-if ($response != null)
-{
-	$tresponse = $response->getTransactionResponse();
-
-	if (($tresponse != null) && ($tresponse->getResponseCode()=="1") )   
-	{
-		echo "Charge Credit Card AUTH CODE : " . $tresponse->getAuthCode() . "\n";
-		echo "Charge Credit Card TRANS ID  : " . $tresponse->getTransId() . "\n";
-	}
-	else
-	{
-		echo  "Charge Credit Card ERROR :  Invalid response\n";
-	}
-}
-else
-{
-	echo  "Charge Credit card Null response returned";
-}
-```
+While using these samples, load the appropriate dependencies of the sdk (e.g. 'composer update') and modify paths as needed (e.g. in 'require' statement) for the code to work in your system.
 
 ## Testing