Is it possible to use this with official Android support FloatingActionButton?
http://developer.android.com/reference/android/support/design/widget/FloatingActionButton.html

This is the xml you generally use. Do I put something in android:src ?
I tried android:src="{faw-check}" and a few others but not sure.

```
    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="16dp"
        android:clickable="true"
        android:src="@drawable/ic_done"
        app:layout_anchor="@id/viewA"
        app:layout_anchorGravity="bottom|right|end"/>
```
