From a8c8d2d34f49c011ff9969eeb4c2011e363633f6 Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <patrick.pelissier@gmail.com>
Date: Thu, 23 Mar 2017 21:39:36 +0100
Subject: [PATCH] Add new reference.

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index a855bfd2..4b4dcb30 100644
--- a/README.md
+++ b/README.md
@@ -160,7 +160,8 @@ For the macro-preprocessing part, other libraries also exist. For example:
 * [MAP MACRO](https://github.com/swansontec/map-macro)
 * [C Preprocessor Tricks, Tips and Idioms](https://github.com/pfultz2/Cloak/wiki/C-Preprocessor-tricks,-tips,-and-idioms)
 * [CPP MAGIC](http://jhnet.co.uk/articles/cpp_magic)
- 
+* [Zlang](https://github.com/pfultz2/ZLang)
+* [Boost preprocessor](http://www.boost.org/doc/libs/1_63_0/libs/preprocessor/doc/index.html)
 
 How to use
 ----------