Update README.md

Add information on achieving remote access with Cloudflared.
Add details about location of config.yaml location (addon_configs folder)

webtrees/README.md

@@ -51,7 +51,7 @@ base_url_portless: base url without port
 
 - Config.yaml
 
-Custom env variables can be added to the config.yaml file referenced in the addon options. Full env variables can be found here : https://github.com/linuxserver/docker-paperless-ng. It must be entered in a valid yaml format, that is verified at launch of the addon.
+Custom env variables can be added to the config.yaml file referenced in the addon options. Folder containing this is not a part of root/config directory (where HA's configuration.yaml is), but /root/addon_configs ([HA documentation](https://developers.home-assistant.io/blog/2023/11/06/public-addon-config/)).  Full env variables can be found here : https://github.com/linuxserver/docker-paperless-ng. It must be entered in a valid yaml format, that is verified at launch of the addon.
 
 ## Installation
 
@@ -65,6 +65,35 @@ The installation of this add-on is pretty straightforward and not different in c
 1. Start the add-on.
 1. Check the logs of the add-on to see if everything went well.
 1. Open the webUI and adapt the software options
+## Remote access
+
+It is possible to expose this add-on for external access (for family and friends).
+This can be done for free, and without exposing your network to the outside.
+One of the solutions for this is a [Cloudflare tunnel](https://github.com/brenner-tobias/addon-cloudflared). There’s plenty of materials on how to do this on the forum and on YouTube, together with securing it with additional rules and Google email verification.
+Here are the considerations for configuring the integrations:
+
+Webtrees config
+```yaml
+BASE_URL: httpS://your_tunnel_domain_name.example.com 
+# This is the external URL you'll be accessing the page with. 
+# Even though the base configuration of the add-on doesn't use SSL, when using Cloudflare it's important the base_url has https 
+# This is because when tunnel is running, Cloudflare will apply its own SSL to connection. 
+# If base_url has http://, this will cause a mismatch and some blocks will not load correctly
+ssl: false #disabled, Cloudflare takes care of this
+base_url_portless: true #must be enabled
+
+#rest is standard
+DATA_LOCATION: /config/data
+certfile: fullchain.pem
+keyfile: privkey.pem
+```
+Cloudflared config
+```yaml
+external_hostname: "" #none, to keep HA accessible only through Nabu Casa, but can be used to do both
+additional_hosts:
+  - hostname: your_tunnel_domain_name.example.com #notice that it's the same as in webtrees config
+    service: http://your_HA_IP:9999 #notice that here it's http and with port, despite webtrees being configured portless
+tunnel_name: Your_tunnel_name```
 
 ## Support
 
@@ -73,3 +102,5 @@ Create an issue on github
 ## Illustration
 
 ![illustration](https://installatron.infomaniak.com/installatron//images/ss2_webtrees.jpg)
+
+