From 8f74a6128827dec687dad4906749d7ad0036dbca Mon Sep 17 00:00:00 2001
From: Tatsushi Demachi <tdemachi@gmail.com>
Date: Thu, 8 Jan 2015 22:24:44 +0900
Subject: [PATCH] Add a description about a root privilege requirement to
 README

Fix #8
---
 README.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index d161efb..552c12f 100644
--- a/README.md
+++ b/README.md
@@ -40,9 +40,13 @@ if err != nil {
 
 It sends an ICMP packet and wait a response. If it receives a response, it
 calls "receive" callback. After that, MaxRTT time passed, it calls "idle"
-callback. For more detail, refer [godoc][godoc] and If you need more example,
+callback. For more detail, refer [godoc][godoc] and if you need more example,
 please see "cmd/ping/ping.go".
 
+## Caution
+This package now only implements ICMP ping using raw socket so the program
+using this package needs to be run as root user.
+
 ## License
 go-fastping is under MIT License. See the [LICENSE][license] file for details.