Add shipping label and custom label (#24)

Co-authored-by: Tegan Snyder <tsnyder@mmm.com>

Author: tegansnyder

readme.md

@@ -56,6 +56,14 @@ foreach ($products as $product) {
     $shipping->setService('UPS Express');
     $shipping->setPrice('1300 USD');
     $item->setShipping($shipping);
+
+    // Set a custom shipping label and weight (optional)
+    $item->setShippingLabel('ups-ground');
+    $item->setShippingWeight('2.14');
+
+    // Set a custom label (optional)
+    $item->setCustomLabel('Some Label 1', 0);
+    $item->setCustomLabel('Some Label 2', 1);
 
     // Add this product to the feed
     $feed->addProduct($item);

src/Product.php

@@ -341,6 +341,46 @@ public function addShipping($shipping)
         return $this;
     }
 
+    /**
+     * Add shipping label
+     * 
+     * @param string $str
+     *
+     * @return $this
+     */
+    public function setShippingLabel($str)
+    {
+        $this->setAttribute('shipping_label', $str, false);
+        return $this;
+    }
+
+    /**
+     * Add shipping weight
+     * 
+     * @param string $str
+     *
+     * @return $this
+     */
+    public function setShippingWeight($str)
+    {
+        $this->setAttribute('shipping_weight', $str, false);
+        return $this;
+    }
+
+    /**
+     * Set a custom label
+     * 
+     * @param string $str
+     * @param integer $pos
+     *
+     * @return $this
+     */
+    public function setCustomLabel($str, $pos)
+    {
+        $this->setAttribute('custom_label_' . $pos, $str, false);
+        return $this;
+    }
+
     /**
      * @param $namespace
      *