added code from unity

Runtime/GameLogSaveData.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+
+namespace Jovian.InGameLogging {
+    [Serializable]
+    public sealed class GameLogSaveData {
+        public List<LogEntry> entries;
+
+        public GameLogSaveData() {
+            entries = new List<LogEntry>();
+        }
+
+        public GameLogSaveData(List<LogEntry> entries) {
+            this.entries = entries;
+        }
+    }
+}