fix small compilation errors

Example/StripeExample/PaymentViewController.m

@@ -6,12 +6,11 @@
 //
 
 #import "Stripe.h"
-
 #import "MBProgressHUD.h"
-
 #import "PaymentViewController.h"
 #import "PKView.h"
 #import <Parse/Parse.h>
+#import "Constants.h"
 
 @interface PaymentViewController ()<PKViewDelegate>
 @property(weak, nonatomic) PKView *paymentView;

Example/StripeExample/ViewController.m

@@ -54,6 +54,17 @@
 
 - (void)createBackendChargeWithToken:(STPToken *)token
                           completion:(void (^)(PKPaymentAuthorizationStatus))completion {
+    if (!ParseApplicationId || !ParseClientKey) {
+        UIAlertView *message = [[UIAlertView alloc] initWithTitle:@"Todo: Submit this token to your backend"
+                                                          message:[NSString stringWithFormat:@"Good news! Stripe turned your credit card into a token: %@ \nYou can follow the instructions in the README to set up Parse as an example backend, or use this token to manually create charges at dashboard.stripe.com .", token.tokenId]
+                                                         delegate:nil
+                                                cancelButtonTitle:NSLocalizedString(@"OK", @"OK")
+                                                otherButtonTitles:nil];
+        
+        [message show];
+        completion(PKPaymentAuthorizationStatusSuccess);
+        return;
+    }
     NSDictionary *chargeParams = @{
                                    @"token": token.tokenId,
                                    @"currency": @"usd",

Stripe/PKPayment+STPTestKeys.h

@@ -8,7 +8,7 @@
 
 #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000
 
-#import "PKPayment.h"
+#import <PassKit/PassKit.h>
 
 extern NSString * const STPSuccessfulChargeCardNumber;
 extern NSString * const STPFailingChargeCardNumber;

Stripe/STPTestPaymentAuthorizationViewController.h

@@ -9,7 +9,7 @@
 #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000
 
 #import <UIKit/UIKit.h>
-#import "PKPaymentAuthorizationViewController.h"
+#import <PassKit/PassKit.h>
 
 @interface STPTestPaymentAuthorizationViewController : UIViewController
 

Stripe/Stripe.m

@@ -11,6 +11,8 @@
 #import "STPAPIConnection.h"
 #import "Stripe.h"
 #import "STPUtils.h"
+#import "STPTestPaymentAuthorizationViewController.h"
+#import "PKPayment+STPTestKeys.h"
 
 NSString *const kStripeiOSVersion = @"1.1.4";
 
@@ -314,6 +316,7 @@ static NSString *const tokenEndpoint = @"tokens";
     PKPaymentRequest *paymentRequest = [PKPaymentRequest new];
     PKPaymentSummaryItem *totalItem = [PKPaymentSummaryItem summaryItemWithLabel:description amount:amount];
     [paymentRequest setMerchantIdentifier:merchantIdentifier];
+    [paymentRequest setSupportedNetworks:@[PKPaymentNetworkAmex, PKPaymentNetworkMasterCard, PKPaymentNetworkVisa]];
     [paymentRequest setMerchantCapabilities:PKMerchantCapability3DS];
     [paymentRequest setCountryCode:@"US"];
     [paymentRequest setCurrencyCode:currency];
@@ -323,7 +326,7 @@ static NSString *const tokenEndpoint = @"tokens";
 
 + (UIViewController *)paymentControllerWithRequest:(PKPaymentRequest *)request
                                           delegate:(id<PKPaymentAuthorizationViewControllerDelegate>)delegate {
-    if ([self isSimulatorBuild] && ![PKPaymentAuthorizationViewController canMakePaymentsUsingNetworks:request.supportedNetworks]) {
+    if ([self isSimulatorBuild]) {
         STPTestPaymentAuthorizationViewController *test = [STPTestPaymentAuthorizationViewController new];
         test.delegate = delegate;
         return test;