From b157e8d10a29fcea34b33988776848a322ef69dc Mon Sep 17 00:00:00 2001
From: evgenv123 <83824538+evgenv123@users.noreply.github.com>
Date: Sat, 18 Sep 2021 22:23:26 +0700
Subject: [PATCH] Update README.md

Hi! As a first-time user of your great package I got a little bit confused on using command line args and env vars together, so it took me some time to make testing and I propose to save this time for other people by adding relevant edits to README.md
---
 README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/README.md b/README.md
index 229a9df..855c02e 100644
--- a/README.md
+++ b/README.md
@@ -158,6 +158,19 @@ var args struct {
 arg.MustParse(&args)
 ```
 
+### Priority
+
+You can use both command line arguments and environmental variables at the same time.
+The priority is as follows: <b>command line arguments</b> -> if empty we check <b>environmental variables</b> -> and then we use <b>default values</b>
+
+```go
+var args struct {
+    Command  string `arg:"-c,env:COMMAND" help:"Command to execute" default:"remove"`
+    File     string `arg:"-f,env:FILE_NAME"`
+}
+arg.MustParse(&args)
+```
+
 ### Default values (before v1.2)
 
 ```go