[chronojump] Improves instructions to compile on chronojump's Windows machine.

[Carles Pina i Estany <carlespina src gnome org>]

commit fe453d3ca79f307cbbf281728e024a8759eabd85
Author: Carles Pina i Estany <carles pina cat>
Date:   Sun Sep 25 20:21:52 2016 +0200

    Improves instructions to compile on chronojump's Windows machine.

 howto_compile.txt |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/howto_compile.txt b/howto_compile.txt
index 6d30bf1..d77186d 100644
--- a/howto_compile.txt
+++ b/howto_compile.txt
@@ -107,6 +107,9 @@ WINDOWS
 - to compile:
 (from remmina)(if there's any problem with the keyboard, just go outside of Linux GUI using CTRL+ALT+F1 and 
return)
 
+On the Windows machine desktop, execute "msys - Acceso directo".
+
+In the shell execute:
 chronojump-shell
 cd chronojump
 git pull