Update README.md (#114)

Author: Naturalclar

README.md

@@ -75,6 +75,7 @@ Then, add the 'UNUserNotificationCenterDelegate' to protocols:
 At the top of the file:
 
 ```objective-c
+#import <UserNotifications/UserNotifications.h>
 #import <RNCPushNotificationIOS.h>
 ```
 
@@ -118,12 +119,6 @@ didReceiveNotificationResponse:(UNNotificationResponse *)response
 
 ```
 
-Also, if not already present, at the top of the file:
-
-```objective-c
-#import <UserNotifications/UserNotifications.h>
-```
-
 And then in your AppDelegate implementation, add the following:
 
 ```objective-c