title: Resources File in .NET Standard (1.4) with New csproj
body: <p>I'm developing an application targeting .NET Standard 1.4, using the new csproj style (not project.json), and trying to get a localizable resources file to become available throughout the project. I get compiler errors when including a resources file currently, stating that the resources member I'm trying to access is not defined.
  (Note: my final solution will have to be consumed by a Xamarin Android project and a UWP project)</p>
  
  <p>The csproj automatically includes the resources file as follows:</p>
  
  <pre><code>&lt;ItemGroup&gt;
      &lt;Compile Update="Resources.Designer.cs"&gt;
          &lt;DesignTime&gt;True&lt;/DesignTime&gt;
          &lt;AutoGen&gt;True&lt;/AutoGen&gt;
          &lt;DependentUpon&gt;Resources.resx&lt;/DependentUpon&gt;
      &lt;/Compile&gt;
  &lt;/ItemGroup&gt;
  
  &lt;ItemGroup&gt;
      &lt;EmbeddedResource Update="Resources.resx"&gt;
          &lt;Generator&gt;ResXFileCodeGenerator&lt;/Generator&gt;
          &lt;LastGenOutput&gt;Resources.Designer.cs&lt;/LastGenOutput&gt;
      &lt;/EmbeddedResource&gt;
  &lt;/ItemGroup&gt;
  </code></pre>
  
  <p>Did it miss a step in the generation? Why can't I access any of the members of my resources file throughout the assembly?</p>