title: Force left to right in UIPageViewController under iOS9
body: <p>I'm using <code>UIPageViewController</code> in my application and since iOS9 was published, while I'm on RTL languages, my <code>UIPageViewController</code> has changed its direction to RTL.</p>
  
  <p>I want to force the <code>UIPageViewController</code> to always be LTR, even if the system language is RTL.</p>
  
  <p>Using Semantic LTR in storyboard didn't work.</p>