Fixes #390 - Gives Fenix the ability to respond to the assist intent

app/src/main/AndroidManifest.xml

@@ -54,6 +54,15 @@
                 <data android:mimeType="text/plain"/>
                 <data android:mimeType="application/xhtml+xml"/>
             </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.ASSIST" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+
+            <meta-data
+                android:name="com.android.systemui.action_assist_icon"
+                android:resource="@mipmap/ic_launcher"/>
         </activity>
 
         <service