Address feedback on PR

Author: Rad Azzouz

example/lib/main.dart

@@ -146,8 +146,8 @@ class _MyAppState extends State<MyApp> {
         iOSSettingsMenuItems:['scrollDirection', 'pageTransition', 'appearance', 'brightness', 'pageMode', 'spreadFitting'],
         showActionNavigationButtons: false,
         iOSShowActionNavigationButtonLabels: false,
-        pageLayoutMode: 'automatic',
-        iOSIsFirstPageAlwaysSingle: false
+        pageLayoutMode: 'double',
+        isFirstPageAlwaysSingle: false
       });
     } on PlatformException catch (e) {
       print("Failed to present document: '${e.message}'.");

ios/Classes/PspdfkitPlugin.m

@@ -135,8 +135,8 @@ - (PSPDFConfiguration *)configuration:(NSDictionary *)dictionary isImageDocument
         if (dictionary[@"isFirstPageAlwaysSingle"]) {
             builder.firstPageAlwaysSingle = [dictionary[@"isFirstPageAlwaysSingle"] boolValue];
         }
-        if (dictionary[@"settingsMenuItems"]) {
-            builder.settingsOptions = [self settingsOptions:dictionary[@"settingsMenuItems"]];
+        if (dictionary[@"iOSSettingsMenuItems"]) {
+            builder.settingsOptions = [self settingsOptions:dictionary[@"iOSSettingsMenuItems"]];
         }
     }];
 }
@@ -340,7 +340,6 @@ - (PSPDFSettingsOptions)settingsOptions:(nullable NSArray <NSString *> *)options
     }
 
     PSPDFSettingsOptions finalOptions = 0;
-
     for (NSString *option in options) {
         if ([option isEqualToString:@"scrollDirection"]) {
             finalOptions |= PSPDFSettingsOptionScrollDirection;
@@ -354,9 +353,12 @@ - (PSPDFSettingsOptions)settingsOptions:(nullable NSArray <NSString *> *)options
             finalOptions |= PSPDFSettingsOptionPageMode;
         } else if ([option isEqualToString:@"spreadFitting"]) {
             finalOptions |= PSPDFSettingsOptionSpreadFitting;
+        } else {
+            NSLog(@"WARNING: '%@' is an invalid settings option. It will be ignored.", option);
         }
     }
 
+    // If no options were passed, we use the default setting options.
     if (finalOptions == 0) {
         finalOptions = PSPDFSettingsOptionDefault;
     }

lib/configuration_options.dart

@@ -89,7 +89,7 @@ const String iOSAllowToolbarTitleChange = "allowToolbarTitleChange";
 const String toolbarTitle = "toolbarTitle";
 
 const String androidSettingsMenuItems = "settingsMenuItems";
-const String iOSSettingsMenuItems = "settingsMenuItems";
+const String iOSSettingsMenuItems = "iOSSettingsMenuItems";
 
 const String showActionNavigationButtons = "showActionNavigationButtons";
 const String iOSShowActionNavigationButtonLabels = "iOSShowActionNavigationButtonLabels";
@@ -98,4 +98,4 @@ const String pageLayoutMode = "pageLayoutMode";
 const String pageLayoutModeAutomatic = "automatic";
 const String pageLayoutModeSingle = "single";
 const String pageLayoutModeDouble = "double";
-const String iOSIsFirstPageAlwaysSingle = "isFirstPageAlwaysSingle";
+const String isFirstPageAlwaysSingle = "isFirstPageAlwaysSingle";