updated documentation

README.md

@@ -259,6 +259,14 @@ You can find setup instructions here: https://goo.gl/KnTzLu
 
 Thanks to @RobEdb (ask on twitter for more details) running his demo store with RaspiBlitz: https://store.edberg.eu - buy a picture of [him and Andreas](https://store.edberg.eu/produkt/jag-andreas/) :)
 
+#### Public Domain with dynamic IP
+
+This is a way to make your RaspiBlitz publicly reachable from the internet so that other nodes can open channels with you and you can connect with the 
+
+To do so you can register at an DynamicDomain service like freedns.afraid.org, forward the TCP ports 8333 (Bitcoin/mainnet),9735 (LND Node) & 10009 (LND RPC) from your internet router to the local IP of your RaspiBlitz and then activate unter "Services" the "DynamicDNS" option.
+
+You will be asked for your dynamic domain name such like "mynode.crabdance.org" and you can also optionally set an URL that will be called regularly to update your routers IP with the dynnamic domain service. At freedns.afraid.org this URL is called "Direct URL" under the menu "Dynamic DNS" once you added one.
+
 ## Get a Debug Report
 
 If your RaspiBlitz is not working right and you like to get help from the community, its good to provide more debug information, so other can better diagnose your problem - please follow the following steps to generate a debug report:

home.admin/config.scripts/internet.dyndomain.sh

@@ -23,7 +23,7 @@ if [ "${turn}" = "on" ] && [ ${#dynDomain} -eq 0 ]; then
   dialog --backtitle "DynamicDNS" --inputbox "ENTER the Dynamic Domain Name:
 
 For more details see chapter in GitHub README 
-'Public Domain with dynmic IP'
+'Public Domain with dynamic IP'
 https://github.com/rootzoll/raspiblitz
 
 example: freedns.afraid.org