Added externally accessible note

DubhAd · web-flow · commit 219fcdbf1162 · 2017-10-28T17:30:18.000+01:00
A common question seems to be about being externally accessible, and SSL. I've added a note at the top about it.
diff --git a/source/_components/google_assistant.markdown b/source/_components/google_assistant.markdown
@@ -16,6 +16,10 @@ ha_release: 0.56
 # Google Assistant Docs
 The Google Assistant component requires a bit more setup than most due to the way Google requires Assistant Apps to be set up.
 
+<p class='note'>
+To use Google Assistant your Home Assistant configuration has to be externally accessible, with a hostname and SSL certificate. If you haven't already configured that you should do so before continuing.
+<p>
+
 ### {% linkable_title Configuration %}
 
 ```yaml
