From a7b4d5eba80fe6ab352457bb61e75cb64c178785 Mon Sep 17 00:00:00 2001
From: Chunting Gu <chunting.gu@outlook.com>
Date: Wed, 12 Aug 2020 10:51:24 +0800
Subject: [PATCH] add a note on branches

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index ee328b3..bb2aa55 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,10 @@
 
 [__中文版__](README_zh_CN.md)
 
+**NOTE：**
+- **master** branch uses C++17 so it doesn't need _Boost_. Asio, as a header-only library, has been included in the `third_party` folder.
+- **[legacy](https://github.com/sprinfall/webcc/tree/legacy)** branch only uses limited C++11 features, so it could be built by old compilers like _VS2013_ and _GCC 4.8_.
+
 Lightweight C++ HTTP __client and server__ library based on [Asio](https://github.com/chriskohlhoff/asio) for __embedding__ purpose.
 
 Please turn to [doc](doc/) for more tutorials and guides. E.g., [Build Instructions](doc/Build-Instructions.md) and [Integrate Into Your Project](doc/Integrate-Into-Your-Project.md).