Simplify server access instructions in README.md

The in-depth details about various methods of accessing the server have been removed from the README.md. More specifically, the Friends List and Invite Code sections have been taken out, while the Direct IP section has been simplified.

README.md

@@ -172,23 +172,8 @@ the port to the outside world.
 
 ## Accessing the server
 
-- Friends List: Your Steam or GoG friends should be able to see your game and join at will the same way they would
-  normally.
-- Direct IP: If you want to set a up direct IP access over the internet "Join LAN Game" you need to open (or forward)
-  port 24642. Or use Server Port Changer to choose a different port.Then give people your external IP.
-- Invite Code: Invite Code connections are routed through Steam/GoG . I've provided two methods for delivering your
-  game's current invite code to players:
-  Invite Code Auto Copy/Paste: The server will copy the most up-to-date invite code to the clipboard (on by default in
-  the config.json file) whenever it changes. You can then use a macro program of your choice to paste that code into the
-  chat service of your choice so that your non-steam friends can always have access to the most up-to-date invite code
-  even when you are not there. For your convenience I've included an AutoHotkey script under the Files Tab> Optional
-  Files here on Nexus that you can use. Run the Game Server>Run the AutoHotKey Script>Open Discord or other chat
-  service and click into the chatbox of that service. The current invite code for your game will be pasted and sent
-  every two minutes. Do not close the chat window of your chat service or click out of the chat box or it will not work.
-  When the game server is turned off it will no longer copy the key so be sure to turn off AutoHotKey as well.
-  Invite Code Bot: The server will copy the invite code to an "InviteCode.txt" file in the same folder as the mod. You
-  can use this to make a bot for a chat service/website/etc. I've provided the code for a node.js Discord bot in the "
-  Discord Bots" section at the bottom of this page.
+- Direct IP: You will need to set a up direct IP access over the internet "Join LAN Game" by opening (or forwarding)
+  port 24642. Or use Server Port Changer to choose a different port. People can then "Join LAN Game" via your external IP.
 
 (Taken from mod description. See [Always On Server](https://www.nexusmods.com/stardewvalley/mods/2677?tab=description)
 for more info.)