From 06bf8c63e368761bca8e4c368cbd8a0117ae4286 Mon Sep 17 00:00:00 2001
From: Ilya Kaznacheev <ilya@kaznacheev.me>
Date: Thu, 18 Aug 2022 13:06:33 +0300
Subject: [PATCH] Add a note on .env file usage

Signed-off-by: Ilya Kaznacheev <ilya@kaznacheev.me>
---
 README.md | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index a9338bd..2f4e5ed 100644
--- a/README.md
+++ b/README.md
@@ -243,11 +243,15 @@ func (c *Config) Update() error {
 
 There are several most popular config file formats supported:
 
-- YAML
-- JSON
-- TOML
-- ENV
-- EDN
+- YAML (`.yaml`, `.yml`)
+- JSON (`.json`)
+- TOML (`.toml`)
+- EDN (`.edn`)
+- ENV (`.env`)
+
+**Note**:
+- while using `.env` file the library will set corresponding data to process environment variables.
+  It will override existing variables with the same keys in the process environment.
 
 ## Integration