From 31db9a47cde09dc611b94469e5aa3e915b978c5d Mon Sep 17 00:00:00 2001
From: Valk Richard Li <48872266+ValKmjolnir@users.noreply.github.com>
Date: Wed, 28 Aug 2019 15:37:21 +0800
Subject: [PATCH] Update README.md

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

diff --git a/README.md b/README.md
index 3778808..1ceb7d2 100644
--- a/README.md
+++ b/README.md
@@ -379,3 +379,7 @@ parse nasal_parser;
 #include "nasal_lexer.h"
 
 main();
+
+# Push down automata
+
+After many times of failure,i finally try to use PDA to do the parse work.