From 1621c37eef1a1ead7ff47328d079b9287af98b44 Mon Sep 17 00:00:00 2001
From: John Lin <johnlin@exosite.com>
Date: Wed, 18 Sep 2019 15:30:03 +0800
Subject: [PATCH] update document about role-arn

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.md b/README.md
index 828f447a..f7ab4647 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,16 @@ You can switch between different sets in the credentials file by passing
 
         cli53 list --profile my_profile
 
+You can also assume a specific role by passing `--role-arn` to any command.
+For example:
+
+        cli53 list --role-arn arn:aws:iam::123456789012:role/myRole
+
+You can combine role with profile.
+For example:
+
+        cli53 list --profile my_profile --role-arn arn:aws:iam::123456789012:role/myRole
+
 For more information, see: http://blogs.aws.amazon.com/security/post/Tx3D6U6WSFGOK2H/A-New-and-Standardized-Way-to-Manage-Credentials-in-the-AWS-SDKs
 
 Note: for Alpine on Docker, the pre-built binaries do not work, so either use Debian, or follow the instructions below for Building from source.