add Group-Tag to make el5-build happy

.gitignore

@@ -1 +1,2 @@
+*~
 /pngquant-1.8.3-src.tar.bz2

pngquant.spec

@@ -3,8 +3,9 @@
 
 Name:		pngquant
 Version:	1.8.3
-Release:	3%{?dist}
+Release:	4%{?dist}
 Summary:	PNG quantization tool for reducing image file size
+Group:		Applications/Multimedia
 License:	BSD with advertising
 URL:		http://%{name}.org
 Source0:	http://%{name}.org/%{name}-%{version}-src.tar.bz2
@@ -59,6 +60,9 @@ install	-Dpm0644 %{name}.1 \
 
 
 %changelog
+* Wed May 22 2013 Björn Esser <bjoern.esser@gmail.com> - 1.8.3-4
+- add Group-Tag to make el5-build happy
+
 * Sun May 19 2013 Björn Esser <bjoern.esser@gmail.com> - 1.8.3-3
 - add Patch0: respect system compiler-flags
 - touch a fake configure-script during prep