update readme and docs

Author: tsolakoua

README.md

@@ -196,7 +196,7 @@ FlightOfferSearch[] flightOffersSearches = amadeus.shopping.flightOffersSearch.p
 // Retrieve a flight order
 FlightOrder order = amadeus.booking.flightOrder("eJzTd9f3NjIJdzUGAAp%2fAiY=").get();
 // Cancel a flight order
-FlightOrder order = amadeus.booking.flightOrder("eJzTd9f3NjIJdzUGAAp%2fAiY=").delete();
+Response order = amadeus.booking.flightOrder("eJzTd9f3NjIJdzUGAAp%2fAiY=").delete();
 
 // Flight Offers price
 FlightPrice[] flightPricing = amadeus.shopping.flightOffersSearch.pricing.post(

src/main/java/com/amadeus/Response.java

@@ -1,6 +1,5 @@
 package com.amadeus;
 
-import com.amadeus.Constants;
 import com.amadeus.exceptions.AuthenticationException;
 import com.amadeus.exceptions.ClientException;
 import com.amadeus.exceptions.NotFoundException;

src/main/java/com/amadeus/booking/FlightOrder.java

@@ -72,7 +72,7 @@ public com.amadeus.resources.FlightOrder get() throws ResponseException {
    * </p>
    *
    * <pre>
-   * FlightOrder order = amadeus.booking.flightOrder.(
+   * Response order = amadeus.booking.flightOrder.(
    * "eJzTd9f3NjIJdzUGAAp%2fAiY=").delete();
    * </pre>
    * @param params the parameters to send to the API