Update README.txt once again to include web.archive.org links and etc

README.txt

@@ -6,15 +6,16 @@ Copyright (c) 2010-2011 Perttu Ahola <celeron55@gmail.com>
 
 Further documentation:
 ----------------------
-- Website: http://celeron.55.lt/~celeron55/minetest/
-- Wiki: http://celeron.55.lt/~celeron55/minetest/wiki/
-- Forum: http://celeron.55.lt/~celeron55/minetest/forum/
+- Website: http://web.archive.org/web/20120405072306/http://c55.me/minetest/
+- Wiki: http://web.archive.org/web/20120307051357/http://c55.me/minetest/wiki/doku.php
+- Forum: http://web.archive.org/web/20120309155932/http://c55.me/minetest/forum/index.php
 - doc/ directory of source distribution
+NOTE: all of these except doc/ are just links to web.archive.org, not actual up-to-date sites
 
 This game is not finished:
 --------------------------
 - Don't expect it to work as well as a finished game will.
-- Please report any bugs to me. debug.txt is useful.
+- Please report any bugs to us. debug.txt is useful.
 
 Controls:
 ---------
@@ -54,7 +55,7 @@ Compiling on GNU/Linux:
 -----------------------
 
 Install dependencies. Here's an example for Debian/Ubuntu:
-$ sudo apt install build-essential libirrlicht-dev cmake libbz2-dev libpng-dev libjpeg8-dev libxxf86vm-dev libgl1-mesa-dev libsqlite3-dev git
+$ sudo apt install build-essential libirrlicht-dev cmake libbz2-dev libpng-dev libjpeg8-dev libxxf86vm-dev libgl1-mesa-dev libsqlite3-dev
 
 Download source, extract (this is the URL to the latest of source repository, which might not work at all times):
 $ git clone https://git.minetest.land/oerkki/minetest.git
@@ -79,6 +80,7 @@ $ ./bin/minetest
 
 Compiling on Windows:
 ---------------------
+NOTE: untested and borrowed from celeron55/minetest. Should be updated eventually
 
 - You need:
 	* CMake: