Convert getShippingRates to use token.

Mobile Buy SDK/Mobile Buy SDK Tests/BUYIntegrationTest.m

@@ -154,7 +154,7 @@
 	[OHHTTPStubs stubUsingResponseWithKey:@"testCheckoutFlowUsingCreditCard_2" useMocks:[self shouldUseMocks]];
 	
 	XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
-	[self.client getShippingRatesForCheckout:_checkout completion:^(NSArray *shippingRates, BUYStatus status, NSError *error) {
+	[self.client getShippingRatesForCheckoutWithToken:_checkout.token completion:^(NSArray *shippingRates, BUYStatus status, NSError *error) {
 		XCTAssertNil(error);
 		XCTAssertEqual(status, BUYStatusComplete);
 		
@@ -752,7 +752,7 @@
 	
 	XCTestExpectation *expectation2 = [self expectationWithDescription:NSStringFromSelector(_cmd)];
 	
-	[self.client getShippingRatesForCheckout:_checkout completion:^(NSArray *returnedShippingRates, BUYStatus status, NSError *error) {
+	[self.client getShippingRatesForCheckoutWithToken:_checkout.token completion:^(NSArray *returnedShippingRates, BUYStatus status, NSError *error) {
 		XCTAssertEqual(BUYStatusPreconditionFailed, status);
 		[expectation2 fulfill];
 	}];
@@ -770,7 +770,7 @@
 	checkout.token = @"bananaaaa";
 	
 	XCTestExpectation *expectation = [self expectationWithDescription:NSStringFromSelector(_cmd)];
-	[self.client getShippingRatesForCheckout:checkout completion:^(NSArray *returnedShippingRates, BUYStatus status, NSError *error) {
+	[self.client getShippingRatesForCheckoutWithToken:checkout.token completion:^(NSArray *returnedShippingRates, BUYStatus status, NSError *error) {
 		XCTAssertEqual(BUYStatusNotFound, status);
 		[expectation fulfill];
 	}];

Mobile Buy SDK/Mobile Buy SDK/Data/BUYClient+Checkout.h

@@ -161,15 +161,15 @@ typedef void (^BUYDataGiftCardBlock)(BUYGiftCard * _Nullable giftCard, NSError *
 #pragma mark - Shipping Rates -
 
 /**
- *  Retrieves a list of applicable shipping rates for a given BUYCheckout.
+ *  Retrieves a list of applicable shipping rates for a given checkout token.
  *  Add the preferred/selected BUYShippingRate to BUYCheckout, then update BUYCheckout
  *
- *  @param checkout The BUYCheckout to retrieve shipping rates for
+ *  @param checkoutToken The checkout token for which to retrieve shipping rates
  *  @param block         (^BUYDataShippingRatesBlock)(NSArray *shippingRates, BUYStatus status, NSError *error);
  *
  *  @return The associated BUYRequestOperation
  */
-- (BUYRequestOperation *)getShippingRatesForCheckout:(BUYCheckout *)checkout completion:(BUYDataShippingRatesBlock)block;
+- (BUYRequestOperation *)getShippingRatesForCheckoutWithToken:(NSString *)checkoutToken completion:(BUYDataShippingRatesBlock)block;
 
 #pragma mark - Cards -
 

Mobile Buy SDK/Mobile Buy SDK/Data/BUYClient+Checkout.m

@@ -191,11 +191,11 @@
 
 #pragma mark - Shipping Rates -
 
-- (BUYRequestOperation *)getShippingRatesForCheckout:(BUYCheckout *)checkout completion:(BUYDataShippingRatesBlock)block
+- (BUYRequestOperation *)getShippingRatesForCheckoutWithToken:(NSString *)checkoutToken completion:(BUYDataShippingRatesBlock)block
 {
-	BUYAssertCheckout(checkout);
+	BUYAssertToken(checkoutToken);
 	
-	NSURL *url  = [self urlForCheckoutsShippingRatesWithToken:checkout.token parameters:@{
+	NSURL *url  = [self urlForCheckoutsShippingRatesWithToken:checkoutToken parameters:@{
 																						  @"checkout" : @"",
 																						  }];
 	

Mobile Buy SDK/Mobile Buy SDK/Utils/BUYApplePayAuthorizationDelegate.m

@@ -242,7 +242,7 @@ const NSTimeInterval PollDelay = 0.5;
 		dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
 		__block BUYStatus shippingStatus = BUYStatusUnknown;
 		do {
-			[self.client getShippingRatesForCheckout:self.checkout completion:^(NSArray *shippingRates, BUYStatus status, NSError *error) {
+			[self.client getShippingRatesForCheckoutWithToken:self.checkout.token completion:^(NSArray *shippingRates, BUYStatus status, NSError *error) {
 				shippingStatus = status;
 
 				if (error) {