how to get newtonsoft to deserialize yes and no to boolean

NOTE: I have provided the solution at the bottom of this feed.

I have a C# Win 8 app where I'm de-serializing some json that looks like this:

{
    'Unit': [
        {
            'name':'House 123',
            isAvailable:'no'
        },
        {
            'name':'House 456',
            isAvailable:'yes'
        }]
}

into a class that uses this interface:

public interface IUnit
{
    string Name { get; }
    bool isAvailable { get; }
}

But Newtonsoft throws an error:

Unexpected character encountered while parsing value: n. Path 'Unit[0].isAvailable, line 1, position 42.

Is there a way to extend Newtonsoft to parse yes/no or 1/0 based on the resulting object property type of bool? Right now it only works for true/false.

There are several posts on custom converters for classes, but not a primitive type like bool.

Any suggestions?