From 6a4eb1f46567bb60e4540d83df406e0202ab2bfc Mon Sep 17 00:00:00 2001
From: chyyuu <yuchen@tsinghua.edu.cn>
Date: Fri, 22 Aug 2014 08:47:07 +0800
Subject: [PATCH] update README

---
 README | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/README b/README
index abb67fa..2d66f5c 100644
--- a/README
+++ b/README
@@ -64,6 +64,11 @@ password: <SPACE KEY>
 
 After you login, you will see the directory ucore_lab in HOME directory.
 
+TESTED ENVIRONMENT
+==================
+UBUNTU 14.04: GCC-4.8.2 CLANG-3.5
+FEDORA 20: GCC-4.8.2
+
 EXERCISE STEPS
 ==============
 0 Get the newest os lab src codes/docs.(Insure you can connect to github in ubuntu running on VrtualBox)