UITextAttributeTextColor = deprecated in iOS 7.0

In this lesson we used the key "UITextAttributeTextColor" to change the color of the UINavigationBar appearance to white. This prompts a warning "first deprecated in iOS 7.0."

Instead:

- (void)customizeUserInterface
{
    [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navBarBackground"] forBarMetrics:UIBarMetricsDefault];
    [[UINavigationBar appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], NSForegroundColorAttributeName, nil]];
}

 This should fix the warning. Oh and, this series is the bomb diggity.