From 3d1a696a60db3608e6276f59ab3595d398dd2566 Mon Sep 17 00:00:00 2001
From: James Wexler <jameswex@users.noreply.github.com>
Date: Mon, 10 Feb 2020 09:03:45 -0500
Subject: [PATCH] Update README.md

---
 facets_dive/README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/facets_dive/README.md b/facets_dive/README.md
index 5dfc74a..d7ccfac 100644
--- a/facets_dive/README.md
+++ b/facets_dive/README.md
@@ -92,6 +92,8 @@ Provided you've loaded the `<facets-dive>` Polymer element, you can insert an in
 <facets-dive></facets-dive>
 ```
 
+Facets Dive makes use of HTML imports. So in order to use it, you must first load the appropriate polyfill, through `<script src="https://cdnjs.cloudflare.com/ajax/libs/webcomponentsjs/1.3.3/webcomponents-lite.js"></script>`, as shown in the demo notebooks in this repo.
+
 To set the data, you'll need to add a little JavaScript.
 In your code, first get a reference to this DOM element, then assign your array of objects to the `data` attribute.