can compile without the precompiled header (#927)

src/ios/APPLocalNotificationOptions.h

@@ -21,6 +21,9 @@
  * @APPPLANT_LICENSE_HEADER_END@
  */
  
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
 @interface APPLocalNotificationOptions : NSObject
 
 - (id) initWithDict:(NSDictionary*)dict;