Appveyor (#1173)
Appveyor (#1173)

* Fixing artifact reference so it pushes out CI builds

* Configuration to AppVeyor

* In AppVeyor configuration, unit test builds as Release

ButchersBoy/MaterialDesignInXamlToolkit,ButchersBoy/MaterialDesignInXamlToolkit,ButchersBoy/MaterialDesignInXamlToolkit