passed the test and readme updated

Author: minjikarin

README.md

@@ -405,7 +405,16 @@ amadeus.shopping.hotelOffersSearch.get({
 // Check offer conditions of a specific offer id
 amadeus.shopping.hotelOfferSearch('XXX').get()
 
-// Hotel Booking API
+// Hotel Booking API V2
+amadeus.booking.hotelOrders.post({
+  guests: [],
+  travelAgent: {},
+  roomAssociations: [],
+  payment: {}
+})
+
+
+// Hotel Booking API V1
 amadeus.booking.hotelBookings.post(
   JSON.stringify({
     'offerId': 'XXX',

spec/amadeus/namespaces.test.js

@@ -156,6 +156,7 @@ describe('Namespaces', () => {
       expect(amadeus.shopping.flightOffers.pricing.post).toBeDefined();
       expect(amadeus.shopping.seatmaps.post).toBeDefined();
       expect(amadeus.booking.hotelBookings.post).toBeDefined();
+      expect(amadeus.booking.hotelOrders.post).toBeDefined();
       expect(amadeus.shopping.transferOffers.post).toBeDefined();
       expect(amadeus.ordering.transferOrders.post).toBeDefined();
       expect(amadeus.ordering.transferOrder('XXX').transfers.cancellation.post).toBeDefined();
@@ -451,7 +452,16 @@ describe('Namespaces', () => {
       amadeus.client.post = jest.fn();
       amadeus.booking.hotelOrders.post();
       expect(amadeus.client.post)
-        .toHaveBeenCalledWith('/v2/booking/hotel-orders', {});
+        .toHaveBeenCalledWith('/v2/booking/hotel-orders', JSON.stringify({
+          data: {
+            type: 'hotel-order',
+            guests: [],
+            travelAgent: {},
+            roomAssociations: [],
+            payment: {},
+            arrivalInformation: {}
+          }
+        }));
     });
 
     it('.amadeus.eReputation.hotelSentiments.get', () => {

src/amadeus/namespaces/booking/hotel_orders.js

@@ -29,7 +29,8 @@ class HotelOrders {
    *  'guests': [],
    *  'travel_agent: {},
    *  'room_associations: [],
-   *  'payment': {}
+   *  'payment': {},
+   *  'arrivalInformation': {}
    * });
    * ```
    */