Adding receipts (#20)

spec/fixtures/list_refund_response.json

@@ -0,0 +1,16 @@
+{
+  "type": "list",
+  "items": [
+    {
+      "id": "216749f7-0016-50be-b000-078d43a63ae4",
+      "status": "succeeded",
+      "amount": {
+        "value": 1,
+        "currency": "RUB"
+      },
+      "created_at": "2017-10-04T19:27:51.407Z",
+      "payment_id": "216749da-000f-50be-b000-096747fad91e"
+    }
+  ],
+  "next_cursor": "416746f8-0016-50be-b000-078d43a4578"
+}