From e0a095571f59f19fecd814781d9a733e3a13ea02 Mon Sep 17 00:00:00 2001
From: Pranav Srinivas Kumar <pranav.srinivas.kumar@gmail.com>
Date: Sat, 4 Nov 2023 15:41:48 -0500
Subject: [PATCH] Updated README to include mutex_args feature

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index 9abd975..0a89e96 100644
--- a/README.md
+++ b/README.md
@@ -298,6 +298,21 @@ foo@bar:/home/dev/$ ./main --first 1 --second 2
 Argument '--second VAR' not allowed with '--first VAR'
 ```
 
+The `add_mutually_exclusive_group()` function also accepts a `required` argument, to indicate that at least one of the mutually exclusive arguments is required:
+
+```cpp
+auto &group = program.add_mutually_exclusive_group(true);
+group.add_argument("--first");
+group.add_argument("--second");
+```
+
+with the following usage will yield an error:
+
+```console
+foo@bar:/home/dev/$ ./main
+One of the arguments '--first VAR' or '--second VAR' is required
+```
+
 ### Negative Numbers
 
 Optional arguments start with ```-```. Can ```argparse``` handle negative numbers? The answer is yes!