From c6b6952606ecbc72725e7384b5019edc1d861a40 Mon Sep 17 00:00:00 2001
From: geomars <egogeomars@gmail.com>
Date: Sun, 29 Oct 2017 07:41:34 +0700
Subject: [PATCH] Update USAGE.md

---
 USAGE.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/USAGE.md b/USAGE.md
index 427c1b2..871c292 100644
--- a/USAGE.md
+++ b/USAGE.md
@@ -1,4 +1,4 @@
-# Usage
+This documentation is based on our [API_Reference](https://sendgrid.com/docs/API_Reference/SMTP_API/index.html)
 
 # INITIALIZATION