axmol/templates/js-template-default/frameworks/runtime-src/proj.win8.1-universal/App.Shared/App.xaml

<Application
    x:Class="CocosAppWinRT.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:CocosAppWinRT"
    xmlns:localData="using:Shared">

    <Application.Resources>

      <x:String x:Key="AppName">cpp_tests</x:String>

    </Application.Resources>
</Application>