See if the NSJ converters are correct

[SteveDunn]

Describe the feature

We have code like:

 public override object ReadJson(Newtonsoft.Json.JsonReader reader, System.Type objectType, object existingValue, Newtonsoft.Json.JsonSerializer serializer)
            {
                var result = serializer.Deserialize<int?>(reader);
                return result.HasValue ? VOTYPE.From(result.Value) : null;
            }

in \src\Vogen\Templates\Double\Double_NewtonsoftJsonConverter.cs

I would expect to see Deserialize<double?>(reader);