fix xcode public headers build settings

lib/ios/ReactNativeNavigation.xcodeproj/project.pbxproj

 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = ReactNativeNavigation;
-				PUBLIC_HEADERS_FOLDER_PATH = "include/${PRODUCT_NAME}";
+				PUBLIC_HEADERS_FOLDER_PATH = "include/$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OBJC_BRIDGING_HEADER = "ReactNativeNavigation-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				OTHER_LDFLAGS = "-ObjC";
 				PRODUCT_NAME = ReactNativeNavigation;
-				PUBLIC_HEADERS_FOLDER_PATH = "include/${PRODUCT_NAME}";
+				PUBLIC_HEADERS_FOLDER_PATH = "include/$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OBJC_BRIDGING_HEADER = "ReactNativeNavigation-Bridging-Header.h";
 				SWIFT_VERSION = 3.0;