title: how to import android.support.v4.widget.SwipeRefreshLayout in my project
body: <p>I want to create a swipe to refresh layout but this exeption is raised.
  Exception details are logged in Window > Show View > Error Log The following classes could not be  found: - android.support.v4.widget.SwipeRefreshLayout (Fix Build Path, Edit XML, Create Class)</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.v4.widget.SwipeRefreshLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:id="@+id/swipe_container"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
  
      &lt;ScrollView android:layout_width="match_parent"
          android:layout_height="match_parent"&gt;
  
          &lt;TextView android:text="swipe"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:layout_marginTop="16dp"
              android:gravity="center"/&gt;
  
      &lt;/ScrollView&gt;
  
  &lt;/android.support.v4.widget.SwipeRefreshLayout&gt;
  </code></pre>