Update README.md

Author: accesstechnology-mike

README.md

@@ -185,45 +185,16 @@ class XeroWebhookController extends Controller
 
 }
 ```
-#Create an invoice - example controller:
 
-```php
-use XeroAPI\XeroPHP\Models\Accounting\Invoice;
-use XeroAPI\XeroPHP\Models\Accounting\Invoices;
-use XeroAPI\XeroPHP\Models\Accounting\TaxType;
-use XeroAPI\XeroPHP\Models\Accounting\LineItem;
-use XeroAPI\XeroPHP\Models\Accounting\AccountType;
-use XeroAPI\XeroPHP\Models\Accounting\CurrencyCode;
-
-$invoices = [];
-
-for($i = 0; $i < 10; $i++) {
-
-    $lineItems = [];
-    for($j = 1; $j < 6; $j++) {
-        $lineItem = new LineItem();
-        $lineItem->setQuantity(1);
-        $lineItem->setUnitAmount(100 * $j);
-        $lineItem->setDescription("Line {$j}");
-        $lineItem->setTaxType(TaxType::OUTPUT2);
-        $lineItem->setAccountCode(AccountType::SALES);
-        $lineItems[] = $lineItem;
-    }
+## Example calls
 
-    $xeroInvoice = new Invoice();
-    $xeroInvoice->setType(Invoice::TYPE_ACCREC);
-    $xeroInvoice->setContact(/* XERO_CONTACT_UUID */);
-    $xeroInvoice->setReference(/* AN INTERNAL REFERENCE */);
-    $xeroInvoice->setLineItems($lineItems);
-    $xeroInvoice->setCurrencyCode(CurrencyCode::NZD);
-    $xeroInvoice->setDueDate(now()->addDays(14));
-    $invoices[] = $xeroInvoice;
-}
+This package is simply a bridge so you don't have to deal with the Oauth2 gymnastics in Laravel.
 
-$xero = resolve(\XeroAPI\XeroPHP\Api\AccountingApi::class);
-$xero->updateOrCreateInvoices(new Invoices(['invoices' => $invoices]));
+Once you've have an instance of \XeroAPI\XeroPHP\Api\AccountingApi::class you're dealing directly with Xero's api library.
 
-```
+The XeroAPI PHP Oauth2 App repository has this list of examples of implementing calls to the API: e.g. invoice creation etc.
+
+https://github.com/XeroAPI/xero-php-oauth2-app/blob/master/example.php
 
 ## License