Is it possible to build a multi-language application using Forms?

I have been trying to follow a Microsoft tutorial shown here

And have got:

<Button x:Uid="Greeting" Text=""/>

And a resource file in my PCL with Greeting.Text with value Diary.. But I have nothing.

Is there a way to build a multi language application using Forms. Either using resources or config?

As a little more information. I don't really want to be adding a new string to WP, android and iOS every time. So would like this reosources file to be in the PCL. and would also like to bind to this file via XAML