[chronojump] Minor change

[Xavier de Blas <xaviblas src gnome org>]

commit a2a043abbae6b21ad0898a98755031b01baaaa9e
Author: Xavier de Blas <xaviblas gmail com>
Date:   Sat Feb 17 14:09:40 2018 +0100

    Minor change

 src/encoderRhythm.cs |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/encoderRhythm.cs b/src/encoderRhythm.cs
index db15da8..f19c079 100644
--- a/src/encoderRhythm.cs
+++ b/src/encoderRhythm.cs
@@ -20,6 +20,7 @@
 
 using System;
 using System.Data;
+using Mono.Unix;
 
 public class EncoderRhythm
 {