added RawJsonReader to MLEM.Data

MLEM.Data/Json/RawJsonReader.cs

@@ -0,0 +1,23 @@
+using System;
+using System.IO;
+using MLEM.Content;
+using Newtonsoft.Json;
+
+namespace MLEM.Data.Json {
+    public class RawJsonReader : RawContentReader {
+
+        public override bool CanRead(Type t) {
+            return true;
+        }
+
+        public override object Read(RawContentManager manager, string assetPath, Stream stream, Type t, object existing) {
+            using (var reader = new JsonTextReader(new StreamReader(stream)))
+                return manager.GetJsonSerializer().Deserialize(reader);
+        }
+
+        public override string[] GetFileExtensions() {
+            return new[] {"json"};
+        }
+
+    }
+}