Smallest, fastest polymorphic JSON serializer

see the article here : [http://www.codeproject.com/Articles/159450/fastJSON] (http://www.codeproject.com/Articles/159450/fastJSON)

Also see Howto.md

It has come to my attention from the HP Enterprise Security Group that using the $type extension has the potential to be unsafe, so use it with common sense and known json sources and not public facing ones to be safe.

I have added JSONParameters.BlackListTypeChecking which defaults to true to check for known $type attack vectors from the paper published from HP Enterprise Security Group, when enabled it will throw an exception and stop processing the json.