Add an extra share button to mave

gistfile1.m

    MaveSDK *mave = [MaveSDK sharedInstance];
    [mave presentInvitePageModallyWithBlock:^(UIViewController *inviteController) {
        if ([inviteController isKindOfClass:[UINavigationController class]]) {
            UINavigationController *navController = (UINavigationController *)inviteController;
            
            // Here replace the method "foo" with your method to present a share sheet
            // And you can of course use a button with an image instead of the title "Share"
            UIBarButtonItem *shareButton = [[UIBarButtonItem alloc] initWithTitle:@"Share" 
                                                                            style:UIBarButtonItemStylePlain
                                                                           target:self action:@selector(foo)];
            navController.topViewController.navigationItem.rightBarButtonItem = shareButton;
        }
        [self presentViewController:inviteController animated:YES completion:nil];
    } dismissBlock:^(UIViewController *controller, NSUInteger numberOfInvitesSent) {
        [controller dismissViewControllerAnimated:YES completion:nil];
    } inviteContext:@"home-page-modal"];