add:更新文档

-###广州单一窗口
+广州单一窗口
+===
+
+* example
 
 
 ```
 ```
-demo
+        $message      = new CEB311Message;
+        $baseTransfer = new BaseTransfer;
+        $baseTransfer->setCopCode('copCode');
+        $baseTransfer->setCopName('copName');
+        $baseTransfer->setDxpId('dxpId');
+        $baseTransfer->setDxpMode('DxpMode');
+        $baseTransfer->setNote('测试');
+
+        $order = new Order();
+
+        $orderHead = new OrderHead;
+        $orderHead->setGuid(\Str::uuid()->toString());
+        $orderHead->setAppTime(Carbon::now()->getPreciseTimestamp(4));
+        $orderHead->setAppStatus(1);
+        $orderHead->setAppType(1);
+        $orderHead->setOrderType(1);
+        $orderHead->setOrderNo('order20160321116421002');
+        $orderHead->setEbpCode("C011111100414353");
+        $orderHead->setEbpName("广东各有所爱信息科技有限公司");
+        $orderHead->setEbcCode("C011111100414353");
+        $orderHead->setEbcName("广东各有所爱信息科技有限公司");
+        $orderHead->setGoodsValue("20");
+        $orderHead->setFreight("0");
+        $orderHead->setDiscount("0");
+        $orderHead->setTaxTotal("0");
+        $orderHead->setActuralPaid("20");
+        $orderHead->setCurrency("142");
+        $orderHead->setBuyerRegNo("9416");
+        $orderHead->setBuyerName("张文龙");
+        $orderHead->setBuyerIdType("1");
+        $orderHead->setBuyerIdNumber("445322199402212519");
+        $orderHead->setNote("测试");
+
+
+        $orderHead->setPayName("支付宝");
+        $orderHead->setPayTransactionId("201907311451410688620491");
+        $orderHead->setBatchNumbers("1232312335");
+        $orderHead->setConsignee("张文龙");
+        $orderHead->setConsigneeTelephone("15800019416");
+        $orderHead->setConsigneeAddress("广东省番禺区天安科技园");
+        //$orderHead->setConsigneeDistrict("");
+        //$orderHead->setNote("");
+
+        $orderList = new OrderList();
+        $orderList->setGnum(1);
+        $orderList->setItemNo('3306');
+        $orderList->setItemName("日本 SANA莎娜 豆乳乳液-测试-02007381");
+        $orderList->setItemDescribe('规格:一支装 ');
+        $orderList->setBarCode('8801046250402');
+        $orderList->setUnit('007');
+        $orderList->setQty('1');
+        $orderList->setPrice(100);
+        $orderList->setTotalPrice(100);
+        $orderList->setCurrency('142');
+        $orderList->setCountry("ABW000");
+
+        $order->setOrderHead($orderHead);
+        $order->pushOrderList($orderList);
+        $order->pushOrderList($orderList);
+
+        $message->setOrder($order);
+        $message->setBaseTransfer($baseTransfer);
+        $obj = new GzCBEC();
+
+        $xml = $obj->report()->CEB311Message($message);
 
 
 
 
 ```
 ```