title: no R.attr.textPrimaryColor in AppCompat v7 r21
body: <p>In the documentation for SDK 21 there's an R.attr.textPrimaryColor attribute that supposedly sets the toolbar's title color according to this <a href="http://developer.android.com/training/material/theme.html" rel="nofollow">page</a>. </p>
  
  <p>That attribute, however, does not exist in the AppCompat theme included in the AppCompat v7 r21 support library. How exactly can we set the title's color through a theme rather than through code?</p>