Move source projects into source directory

source/MonoGame.Extended.Particles/Serialization/ModifierExecutionStrategyJsonConverter.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Reflection;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace MonoGame.Extended.Particles.Serialization
+{
+    public class ModifierExecutionStrategyJsonConverter : JsonConverter
+    {
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            writer.WriteValue(value.ToString());
+        }
+
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            var value = JToken.Load(reader).ToObject<string>();
+            return ParticleModifierExecutionStrategy.Parse(value);
+        }
+
+        public override bool CanConvert(Type objectType)
+        {
+            return objectType == typeof(ParticleModifierExecutionStrategy) 
+                || objectType.GetTypeInfo().BaseType == typeof(ParticleModifierExecutionStrategy);
+        }
+    }
+}