From 0d81214f75237590903791ef260c3932cbd73090 Mon Sep 17 00:00:00 2001
From: Yota Toyama <raviqqe@gmail.com>
Date: Thu, 23 Nov 2017 00:03:59 +0900
Subject: [PATCH] List supported file extensions

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

diff --git a/README.md b/README.md
index 777d03a..07a0b8e 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,7 @@ Options:
 
 ## Supported properties
 
+- File extensions: `.md`, `.html`, `.htm`
 - HTML tags: `a`, `img`
 - HTML attributes: `href`, `src`
 - URL schemes: `http`, `https`