[easytag] Add a TODO item about custom themed icons

[David King <davidk src gnome org>]

commit b7eafda2bb62ea2da51286477c92bd1f748b22ec
Author: David King <amigadave amigadave com>
Date:   Thu Jul 14 08:42:28 2016 +0100

    Add a TODO item about custom themed icons

 TODO |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/TODO b/TODO
index 38b47d6..cf917f9 100644
--- a/TODO
+++ b/TODO
@@ -13,6 +13,7 @@ After GTK+ 3
 ------------
 
 * Use GtkAppChooserDialog for selecting applications
+* Use gtk_icon_theme_add_resource_path() from GTK+ 3.14
 
 Tagging features
 ----------------