Updated README

README.md

@@ -51,6 +51,24 @@ deleted = client.products.delete(resource=1234)
 # Count of products
 count = client.products.count()
 
+# Get product metafields
+metafields = client.products.metafields.all(resource_id=1234)
+
+# Get product metafield
+metafield = client.products.metafields.get(resource_id=1234, sub_resource_id=5678)
+
+# Create product metafield
+data = {"metafield": {"namespace": "warehouse", "key": "foo", "value": 25, "type": "integer"}}
+metafield = client.products.metafields.create(resource_id=5678, json=data)
+
+# Update product metafield
+data = {"metafield": {"value": 30}}
+metafield = client.products.metafields.update(resource_id=1234, sub_resource_id=5678, json=data)
+
+# Delete product metafield
+deleted = client.products.metafields.delete(resource_id=1234, sub_resource_id=5678)
+
+
 # Cancel order
 order = client.orders.cancel(resource_id=1234)