[gnome-multi-writer] trivial: Sync the example spec file from Fedora

[Richard Hughes <rhughes src gnome org>]

commit 0c18adf9d492ac7f56c9b9688fccb7843e27f861
Author: Richard Hughes <richard hughsie com>
Date:   Fri Jan 9 15:33:27 2015 +0000

    trivial: Sync the example spec file from Fedora

 contrib/gnome-multi-writer.spec.in |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/contrib/gnome-multi-writer.spec.in b/contrib/gnome-multi-writer.spec.in
index 14f57b9..b9fda49 100644
--- a/contrib/gnome-multi-writer.spec.in
+++ b/contrib/gnome-multi-writer.spec.in
@@ -16,9 +16,11 @@ BuildRequires: gtk3-devel
 BuildRequires: intltool
 BuildRequires: itstool
 BuildRequires: libcanberra-devel >= 0.10
-BuildRequires: libgusb-devel >= 0.1.4
+BuildRequires: libgusb-devel >= 0.2.2
 BuildRequires: libudisks2-devel
 
+Requires:      gnome-icon-theme-extras
+
 %description
 GNOME MultiWriter can be used to write an ISO file to multiple USB devices
 simultaneously.