Using ObservableCollection with the Portable Library Tools CTP

One of the main goals of the Portable Library Tools is to be able to implement your ViewModel in the Portable Library such that you can share it between your UI in your Silverlight, Windows Phone, or even WPF project.  Unfortunately, this is a bit of a challenge with the Portable Library Tools CTP, because it does not include ObservableCollection or INotifyCollectionChanged. The reason for