From e8379b69cc98acc38c1850508d4fa81b61fb2b36 Mon Sep 17 00:00:00 2001
From: Michael Herman <hermanmu@gmail.com>
Date: Mon, 16 Jun 2014 08:42:35 -0500
Subject: [PATCH] updates

---
 17_rewrite_git_history.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/17_rewrite_git_history.md b/17_rewrite_git_history.md
index f67437f..f07850c 100644
--- a/17_rewrite_git_history.md
+++ b/17_rewrite_git_history.md
@@ -8,4 +8,6 @@ $ export GIT_COMMITER_DATE="Sun Jun 15 14:00 2014 +0100"
 $ export GIT_AUTHOR_DATE="Sun Jun 15 14:00 2014 +0100"
 $ git commit -m "so bad"
 $ git push
-```
\ No newline at end of file
+```
+
+> `GIT_COMMITER_DATE` and `GIT_AUTHOR_DATE` are environment variables
\ No newline at end of file