title: presentViewController not loading tab bar when switch views
body: <p>When I switch from designworks.xib (designworks.m, designworks.h) to the MainStoryboard FirstViewController (which is a tab bar controller, first controller out of the tabs) it loads the content on the storyboard but it doesnt load in the tab bar navigation at the bottom.</p>
  
  <pre><code>- (IBAction)backToHome:(id)sender {
      /*
      FirstViewController *fvc = [[FirstViewController alloc] initWithNibName:nil bundle:nil];
      [self presentViewController:fvc animated:YES completion:nil];
       */
      UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
      FirstViewController *fvc = [storyboard instantiateViewControllerWithIdentifier:@"FirstViewController"];
      fvc.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
      [self presentViewController:fvc animated:YES completion:nil];
  }
  </code></pre>