format the code

README.md

@@ -24,7 +24,7 @@ Some examples are at `/cmd` folder.
 
 # Getting start
 After you install golang tools:
-- Run `go run cmd/ping/ping.go` to ping and list the Miaoscraft mc-server.  
+- Run `go run cmd/ping/ping.go localhost` to ping and list the Miaoscraft mc-server.  
 - Run `go run cmd/daze/daze.go` to join local server at *localhost:25565* as Steve on offline mode.
 
 See `/bot` folder to get more infomation about how to create your own robot.

cmd/ping/ping.go

@@ -1,3 +1,4 @@
+// Useage: go run cmd/ping/ping.go localhost
 package main
 
 import (