<?xml version="1.0" encoding="utf-8"?>
<menu
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/menu_add"
        android:title="@string/menu_add" />
    <item
        android:id="@+id/menu_settings"
        android:title="@string/menu_settings" />
</menu>

<?xml version="1.0" encoding="utf-8"?>
<menu
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/menu_add"
        android:title="@string/menu_add"
        android:icon="@android:drawable/ic_menu_add" />
    <item
        android:id="@+id/menu_settings"
        android:title="@string/menu_settings"
        android:icon="@android:drawable/ic_menu_preferences" />
</menu>

Add icons to main menu.
[GBOT-16] Add icons to main menu.
