[longomatch] Fix coordinates serialization

[Andoni Morales Alastruey <amorales src gnome org>]

commit 0ff4a12c803e986b4745e0ee99f8cf086ea77837
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Thu Jun 13 22:24:07 2013 +0200

    Fix coordinates serialization

 LongoMatch.Core/Common/Coordinates.cs |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/LongoMatch.Core/Common/Coordinates.cs b/LongoMatch.Core/Common/Coordinates.cs
index 474e9f3..c644d6a 100644
--- a/LongoMatch.Core/Common/Coordinates.cs
+++ b/LongoMatch.Core/Common/Coordinates.cs
@@ -20,6 +20,7 @@ using System.Collections.Generic;
 
 namespace LongoMatch.Common
 {
+       [Serializable]
        public class Coordinates: List<Point>
        {
                public Coordinates ()
@@ -54,6 +55,7 @@ namespace LongoMatch.Common
                }
        }
        
+       [Serializable]
        public class Point {
                public Point (int x, int y) {
                        X = x;