From 81dd25829f28fadbc06b296498bb9c29b5ffdd0c Mon Sep 17 00:00:00 2001
From: Jacob Zelek <jacob.zelek@outlook.com>
Date: Thu, 17 Dec 2020 06:31:25 -0800
Subject: [PATCH] Update doc to indicate parallelism arg is optional

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 34797d9..c138ed3 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ $ ./generator --help
 Video Thumbnail Generator
 
 Usage:
-  ./generator <video> <interval> <width> <height> <columns> <output> <parallelism>
+  ./generator <video> <interval> <width> <height> <columns> <output> [<parallelism>]
   ./generator (-h | --help)
   ./generator --version
 
@@ -45,7 +45,7 @@ Options:
   <height>        Height of each thumbnail.
   <columns>       Total number of thumbnails per line.
   <output>        Output.
-  <parallelism>   Number of files to process in parallel
+  [<parallelism>]   Number of files to process in parallel
 ```
 
 ## Example