fixed gnome login issue

custom-add-ons.md

@@ -0,0 +1,41 @@
+## Custom Add-ons for your Sovran Pro
+
+Add-ons are extra features you can have installed before your Sovran Pro is shipped to you. 
+
+1. There is also Bitcoin Knots Node available to be added instead of the regular Bitcoin Node. Bitcoin Knots allows a special filter to block unwanted, unusable, erroneous data on the Bitcoin Timechain chain.
+
+https://bitcoinknots.org
+
+
+2. By default Sovran_SystemsOS runs LND as the default Lightning node software for BTCpayserver. You are now able to run CLN as the backend to BTCpayserver instead of LND.
+
+https://blockstream.com/lightning/
+
+
+3. There is Mempool to be added on via a Tor connection.
+
+https://github.com/mempool/mempool
+
+
+The code will be installed in the `custom.nix` file.
+
+
+The code for Bitcoin Knots is as follows:
+
+```nix
+services.bitcoind.package = pkgs.bitcoind-knots;
+```
+
+
+The code for CLN for BTCpayserver backend is as follows:
+
+```nix
+services.btcpayserver.lightningBackend = mkForce "clightning";
+```
+
+The code for Mempool is as follows:
+
+```nix
+services.mempool.enable = true;
+```
+