Adjust --help message for compizboxmenu

Add info about compizboxmenu when running xdgmenumaker -h.

src/xdgmenumaker

@@ -201,13 +201,13 @@ def usage():
     print()
     print('OPTIONS:')
     print('    -f, --format         the output format to use.')
-    print('                         Valid options are blackbox, fluxbox, icewm,')
-    print('                         jwm, windowmaker and pekwm')
+    print('                         Valid options are blackbox, compizboxmenu,'
+    print('                         fluxbox, icewm, jwm, windowmaker and pekwm')
     print('    -i, --icons          enable support for icons in the')
     print('                         menus. Does not work with windowmaker')
     print('    -s, --size           preferred icon size in pixels (default: 16)')
     print('    -n, --no-submenu     do not create a submenu. Does not work with')
-    print('                         windowmaker')
+    print('                         compizboxmenu and windowmaker')
     print('        --pekwm-dynamic  generate dynamic menus for pekwm')
     print('    -h, --help           show this help message')
     print('  You have to specify the output format using the -f switch.')