[iagno] Use GtkHeaderBar

[Robert Ancell <rancell src gnome org>]

commit d9002294fd387dd05862ad6a8585f45640877852
Author: Robert Ancell <robert ancell canonical com>
Date:   Tue Oct 15 11:24:17 2013 +1300

    Use GtkHeaderBar
    
    Fixes https://bugzilla.gnome.org/show_bug.cgi?id=710147

 configure.ac   |    2 +-
 src/iagno.vala |    6 ++++++
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1a879b9..0a80ba1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,7 +14,7 @@ dnl Dependencies
 dnl ###########################################################################
 
 GLIB_REQUIRED=2.36.0
-GTK_REQUIRED=3.4.0
+GTK_REQUIRED=3.10.0
 RSVG_REQUIRED=2.32.0
 CANBERRA_GTK_REQUIRED=0.26
 
diff --git a/src/iagno.vala b/src/iagno.vala
index 2860acb..386990f 100644
--- a/src/iagno.vala
+++ b/src/iagno.vala
@@ -96,6 +96,12 @@ public class Iagno : Gtk.Application
         else if (settings.get_boolean ("window-is-maximized"))
             window.maximize ();
 
+        var headerbar = new Gtk.HeaderBar ();
+        headerbar.show_close_button = true;
+        headerbar.set_title (_("Iagno"));
+        headerbar.show ();
+        window.set_titlebar (headerbar);
+
         add_window (window);
 
         view = new GameView ();