Adding example of "revealed" polygon hole with outline (#1050)

* initial additions

* fixes based on lukasz review

Author: Langston Smith

MapboxAndroidDemo/src/global/java/com/mapbox/mapboxandroiddemo/MainActivity.java

@@ -57,6 +57,7 @@
 import com.mapbox.mapboxandroiddemo.examples.dds.MultipleHeatmapStylingActivity;
 import com.mapbox.mapboxandroiddemo.examples.dds.PolygonHolesActivity;
 import com.mapbox.mapboxandroiddemo.examples.dds.PolygonSelectToggleActivity;
+import com.mapbox.mapboxandroiddemo.examples.dds.RevealedPolygonHoleOutlineActivity;
 import com.mapbox.mapboxandroiddemo.examples.dds.SatelliteLandSelectActivity;
 import com.mapbox.mapboxandroiddemo.examples.dds.StyleCirclesCategoricallyActivity;
 import com.mapbox.mapboxandroiddemo.examples.dds.StyleLineIdentityPropertyActivity;
@@ -1326,6 +1327,14 @@ private void initializeModels() {
       null,
       R.string.activity_dds_symbol_collision_detection_url, false, BuildConfig.MIN_SDK_VERSION));
 
+    exampleItemModels.add(new ExampleItemModel(
+      R.id.nav_dds,
+      R.string.activity_dds_polygon_revealed_hole_outline_title,
+      R.string.activity_dds_polygon_revealed_hole_outline_description,
+      new Intent(MainActivity.this, RevealedPolygonHoleOutlineActivity.class),
+      null,
+      R.string.activity_dds_polygon_revealed_hole_outline_url, false, BuildConfig.MIN_SDK_VERSION));
+
     exampleItemModels.add(new ExampleItemModel(
       R.id.nav_basics,
       R.string.activity_basic_simple_mapview_title,

MapboxAndroidDemo/src/main/AndroidManifest.xml

@@ -85,6 +85,13 @@
                 android:name="android.support.PARENT_ACTIVITY"
                 android:value="com.mapbox.mapboxandroiddemo.MainActivity" />
         </activity>
+        <activity
+            android:name=".examples.dds.RevealedPolygonHoleOutlineActivity"
+            android:label="@string/activity_dds_polygon_revealed_hole_outline_title">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value="com.mapbox.mapboxandroiddemo.MainActivity" />
+        </activity>
         <activity
             android:name=".examples.dds.DrawPolygonActivity"
             android:label="@string/activity_dds_polygon_title">