[longomatch] Make TimelineNode serializable

[Andoni Morales Alastruey <amorales src gnome org>]

commit 69d0b255fabbe06bab445460f9a37c215d810191
Author: Andoni Morales Alastruey <ylatuya gmail com>
Date:   Mon Dec 19 23:38:08 2011 +0100

    Make TimelineNode serializable

 LongoMatch.Core/Store/TimelineNode.cs |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/LongoMatch.Core/Store/TimelineNode.cs b/LongoMatch.Core/Store/TimelineNode.cs
index 928d613..5571418 100644
--- a/LongoMatch.Core/Store/TimelineNode.cs
+++ b/LongoMatch.Core/Store/TimelineNode.cs
@@ -22,6 +22,7 @@ namespace LongoMatch.Store
 {
     /* FIXME: Code duplicated from Play, unfortunately we can't
       * modify the class hierachy */
+	[Serializable]
 	public class TimelineNode: TimeNode, ITimelineNode
 	{
 		public TimelineNode ()