title: FlexboxLayoutManager setFlexDirection.ROW is not working
body: <p>The problem is that all items show one item per row. like this:</p>
  
  <pre><code>|   item    |
  |   item    |
  |   item    |
  </code></pre>
  
  <p>I want to show them like this:</p>
  
  <pre><code>| item item |
  |   item    |
  |           |
  </code></pre>
  
  <p>I have explicity set the width of items to 148dp. It was working fine in GridLayoutManager when column span was 2 or <a href="https://gist.github.com/yqritc/ccca77dc42f2364777e1" rel="nofollow noreferrer">dynamic column per row based on their width</a> to show as many as the screen width but there I could not center them easily. </p>
  
  <p>After FlexLayoutManager I got this problem. Although when I set the direction to COLUMN the items show attached to left side but still on each row.  I have this RealmRecycleView:</p>
  
  <pre><code>   &lt;co.moonmonkeylabs.realmrecyclerview.RealmRecyclerView
      android:id="@+id/recycleViewDashboard"
      android:layout_width="match_parent"
      android:padding="@dimen/grid_item_offset"
      android:clipToPadding="false"
      android:layout_height="wrap_content"
      app:rrvIsRefreshable="false"
      app:rrvLayoutType="LinearLayout"&gt;
     &lt;/co.moonmonkeylabs.realmrecyclerview.RealmRecyclerView&gt;
  </code></pre>
  
  <p>and this is where I set the LayoutManager</p>
  
  <pre><code>FlexboxLayoutManager layoutManager = new FlexboxLayoutManager(getContext());
      layoutManager.setFlexDirection(FlexDirection.ROW);
      layoutManager.setJustifyContent(JustifyContent.SPACE_AROUND);
      mRecyclerView.getRecycleView().setLayoutManager(layoutManager);
  </code></pre>
  
  <p>and this is my ItemView:</p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"&gt;
  
  &lt;ImageView
      android:id="@+id/image_view"
      android:layout_centerInParent="true"
      android:layout_width="148dp"
      android:layout_height="148dp"
      android:background="#ccc"
      android:scaleType="fitXY" /&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>