Minor update

bin/fir

@@ -6,6 +6,8 @@ Fir::Cli.find_extends.each { |g| require g }
 begin
 	Fir::Cli.start ARGV
 rescue Exception => e
-	puts "! 错误: #{ Paint[e.to_s, :red] }"
+	s = e.to_s
+	s = ": #{ s }" if !s.empty?
+	puts "! #{ Paint[ "错误#{ s }", :red] }"
 end