updates

mjhea0 · mjhea0 · commit e8379b69cc98 · 2014-06-16T08:42:35.000-05:00
diff --git 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
-```
+```
+
+> `GIT_COMMITER_DATE` and `GIT_AUTHOR_DATE` are environment variables
