From c9e961d661f15bf23566e2781be07c08040339e4 Mon Sep 17 00:00:00 2001
From: Hideki Shimizu <shimiz@cns.s.u-tokyo.ac.jp>
Date: Thu, 31 Oct 2019 19:12:23 +0900
Subject: [PATCH] [mod] README.md

---
 README.md | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 12d7bda..373f3bf 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,21 @@
 # Timing diagram
 
-Draw timing diagram by root
\ No newline at end of file
+Easy python script to draw timing diagram by using pyroot.
+
+![example](/example.eps)
+
+## Requirement
+
+ - python3x
+ - pyroot
+ - pyyaml
+
+
+## Usage
+
+Edit yaml file as the example,
+and say 
+```console
+$ python -i timing_diagram.py 
+```
+
-- 
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