Add setup steps for Windows users

Please consider these alterations for windows users, there's quite a bit that needs to be set up before you can run scenic on windows

Author: bruceme

guides/getting_started.md

@@ -3,6 +3,11 @@
 This guide will walk you through installing the new project generator, then
 building your first Scenic application.
 
+Some initial setup is required for windows.  You'll need 
+windows services for linux (WSL) and VcXsrv,
+[Jeffrey Borchert's article details these steps.](https://medium.com/@jeffborch/running-the-scenic-elixir-gui-framework-on-windows-10-using-wsl-f9c01fd276f6)
+You'll come back here to finish.
+
 ## Install `scenic.new`
 
 The Scenic Archive is the home of the `scenic.new` mix task, which lays out a