bin/mizuho in FooBarWidget-mizuho-0.9.0 vs bin/mizuho in FooBarWidget-mizuho-0.9.1

@@ -30,11 +30,15 @@
 	puts "Please see '--help' for valid options."
 	exit 1
 end
 
 begin
-	Mizuho::Generator.new(ARGV[0], nil, options[:template],
-		options[:multi_page], options[:icons_dir]).start
+	if ARGV.empty?
+		puts parser
+	else
+		Mizuho::Generator.new(ARGV[0], nil, options[:template],
+			options[:multi_page], options[:icons_dir]).start
+	end
 rescue Mizuho::GenerationError
 	STDERR.puts "*** ERROR"
 	exit 2
 end