Assert on initializers you aren't using

gistfile1.m

- (id)initWithDocument:(ELDocument *)document
{
    if ((self = [super initWithNibName:nil bundle:nil]))
    {
      // Do your stuff in here.
    }
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    NSAssert(NO, @"Use ELEditingViewController' initializer `initWithDocument:` instead");
    return nil;
}