Validate() throws exception on non-JSON string

[RodneyRichardson]

When validating an invalid JSON document (truncated), I would expect Validate() to return an appropriate ValidationError. Instead it throws a JsonReaderException (thrown by JsonTextReader):

Newtonsoft.Json.JsonReaderException: Unterminated string. Expected delimiter: ". Path 'blah', line 3, position 64.
   at Newtonsoft.Json.JsonTextReader.ReadStringIntoBuffer(Char quote)
   at Newtonsoft.Json.JsonTextReader.ParseValue()
   at Newtonsoft.Json.Linq.JContainer.ReadContentFrom(JsonReader r, JsonLoadSettings settings)
   at Newtonsoft.Json.Linq.JContainer.ReadTokenFrom(JsonReader reader, JsonLoadSettings options)
   at Newtonsoft.Json.Linq.JObject.Load(JsonReader reader, JsonLoadSettings settings)
   at Newtonsoft.Json.Linq.JToken.ReadFrom(JsonReader reader, JsonLoadSettings settings)
   at Newtonsoft.Json.Linq.JToken.Parse(String json, JsonLoadSettings settings)
   at NJsonSchema.JsonSchema4.Validate(String jsonData)

Suggest catching this exception, and adding a new ValidationErrorKind.

[RicoSuter]

Yes, why not... it may be a breaking change for some - but fine with me. Can you create a PR?

[RodneyRichardson]

I am happy to do that

[RodneyRichardson]

Looking at this in more detail, this doesn't really fit in with what the ValidationError encapsulates (i.e. an error with a specific property). JsonReaderException doesn't map cleanly to this, so I think it's nicer to leave it as it is.

I'm happy for this to be resolved as "Won't fix", and perhaps just update documentation?

[RicoSuter]

Updated wiki: https://github.com/RSuter/NJsonSchema/wiki/JsonSchemaValidator