Merge "Added android:tools specification on navigation and actions page." into mnc-io-docs

am: 4ca0c805

* commit '4ca0c805':
  Added android:tools specification on navigation and actions page.

Change-Id: Ied53973a54a95d2590ed394ebcba0789017687da

docs/html/wear/preview/features/ui-nav-actions.jd

@@ -76,6 +76,7 @@ To add an action or a navigation drawer, declare your user interface with a
 <android.support.wearable.view.drawer.WearableDrawerLayout
     android:id="@+id/drawer_layout"
     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"
     tools:deviceIds="wear">