title: Android missing layout_alignParentStart after upgrade
body: <p>I upgraded from Android Studio 0.5 to 0.8
  now I have heaps of issues, I resolved most of them but now I get this error</p>
  
  <blockquote>
    <p>Error:(12) No resource identifier found for attribute 'layout_alignParentStart' in package 'android'</p>
  </blockquote>
  
  <p>I dont know why it does not have <code>layout_alignParentStart</code> anymore?!</p>
  
  <p>am I missing something here?</p>
  
  <p><img src="https://i.stack.imgur.com/crF8v.png" alt="enter image description here"></p>