title: Rendering Problems Exception raised during rendering: <include /> can only be used inside of a ViewGroup
body: <p>Im new at developing with Android Studio. So this is the problem:
  I open a new project and before even touching or adding a code I get this:</p>
  
  <p>"Rendering Problems Exception raised during rendering:  can only be used inside of a ViewGroup"</p>
  
  <p>So I use Nexus 4 as ADV (as a default), so I tried other ADVs and get the same warning. The only thing that gives no warning is Android Wear Round and Square.</p>
  
  <p>Anyone who can help me? Below is the layout code:</p>
  
  <pre><code>&lt;RelativeLayout
       xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:tools="http://schemas.android.com/tools"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:paddingLeft="@dimen/activity_horizontal_margin"
       android:paddingRight="@dimen/activity_horizontal_margin"
       android:paddingTop="@dimen/activity_vertical_margin"
       android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"&gt;
  
  &lt;TextView android:text="Hi"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginTop="22dp"
      android:layout_alignParentTop="true"
      android:layout_centerHorizontal="true"
      android:id="@+id/textView" /&gt;
  
  
      &lt;/RelativeLayout&gt;
  </code></pre>