add refund facade

src/Facade/NagadRefund.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Codeboxr\Nagad\Facade;
+
+use Illuminate\Support\Facades\Facade;
+
+/**
+ * @method static refund($paymentRefId, $refundAmount)
+ */
+class NagadRefund extends Facade
+{
+    /**
+     * Get the registered name of the component.
+     *
+     * @return string
+     */
+    protected static function getFacadeAccessor()
+    {
+        return 'refundPayment';
+    }
+}

src/NagadServiceProvider.php

@@ -2,6 +2,7 @@
 
 namespace Codeboxr\Nagad;
 
+use Codeboxr\Nagad\Payment\Refund;
 use Codeboxr\Nagad\Payment\Payment;
 use Illuminate\Support\ServiceProvider;
 
@@ -34,5 +35,9 @@ public function register()
         $this->app->bind("payment", function () {
             return new Payment();
         });
+
+        $this->app->bind("refundPayment", function () {
+            return new Refund();
+        });
     }
 }