Added more documentation and started pointer handling

BlendFileTester/Program.cs

@@ -4,7 +4,7 @@ using BlendFile;
 var reader = new Reader("cube.blend");
 reader.Read();
 
-foreach (var obj in reader.Objects)
+foreach (var obj in reader.GetObjects())
 {
     Console.WriteLine(obj.GetType());
     Console.WriteLine(obj.ToString());