Updated help message for icewm

src/xdgmenumaker

@@ -83,8 +83,8 @@ def usage():
 	print 'USAGE:', os.path.basename(sys.argv[0]), '[OPTIONS]'
 	print
 	print 'OPTIONS:'
-	print '    -f, --format     the output format to use. Valid options are fluxbox and windowmaker'
+	print '    -f, --format     the output format to use. Valid options are fluxbox, icewm and windowmaker'
-	print '    -i, --icons      enable support for icons in the menus. Only works with fluxbox'
+	print '    -i, --icons      enable support for icons in the menus. Only works with fluxbox, icewm'
 	print '    -h, --help       show this help message'
 	print '  You have to specify the output format using the -f switch.'
 	print