README: Remove references to Minecraft and InfiniMiner (#8260)

README.md

@@ -5,7 +5,7 @@ Minetest
[![Translation status](https://hosted.weblate.org/widgets/minetest/-/svg-badge.svg)](https://hosted.weblate.org/engage/minetest/?utm_source=widget)
[![License](https://img.shields.io/badge/license-LGPLv2.1%2B-blue.svg)](https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html)

An InfiniMiner/Minecraft inspired game.
Minetest is a free open-source voxel game engine with easy modding and game creation.

Copyright (C) 2010-2018 Perttu Ahola <celeron55@gmail.com>
and contributors (see source file comments and the version control log)
@@ -151,7 +151,7 @@ For Fedora users:
#### Download

You can install Git for easily keeping your copy up to date.
If you don’t want Git, read below on how to get the source without Git.  
If you don’t want Git, read below on how to get the source without Git.
This is an example for installing Git on Debian/Ubuntu:

    sudo apt install git
@@ -235,7 +235,7 @@ General options and their default values:
    VERSION_EXTRA=             - Text to append to version (e.g. VERSION_EXTRA=foobar -> Minetest 0.4.9-foobar)

Library specific options:
    

    BZIP2_INCLUDE_DIR               - Linux only; directory where bzlib.h is located
    BZIP2_LIBRARY                   - Linux only; path to libbz2.a/libbz2.so
    CURL_DLL                        - Only if building with cURL on Windows; path to libcurl.dll
@@ -293,7 +293,7 @@ Library specific options:
* This section is outdated. In addition to what is described here:
  * In addition to minetest, you need to download [minetest_game](https://github.com/minetest/minetest_game).
  * If you wish to have sound support, you need libogg, libvorbis and libopenal
  

* You need:
	* CMake:
		http://www.cmake.org/cmake/resources/software.html
@@ -372,7 +372,7 @@ Library specific options:
	* It will warn about missing stuff, ignore that at this point. (later don't)
	* Make sure the configuration is as follows
	  (note that the versions may differ for you):
	  

                BUILD_CLIENT             [X]
                BUILD_SERVER             [ ]
                CMAKE_BUILD_TYPE         Release
@@ -387,7 +387,7 @@ Library specific options:
                GETTEXT_INCLUDE_DIR      DIR/gettext/include
                GETTEXT_LIBRARIES        DIR/gettext/lib/intl.lib
                GETTEXT_MSGFMT           DIR/gettext/bin/msgfmt
	

	* If CMake complains it couldn't find SQLITE3, choose "Advanced" box on the
	  right top corner, then specify the location of SQLITE3_INCLUDE_DIR and
	  SQLITE3_LIBRARY manually.
@@ -423,7 +423,7 @@ This is how we build Windows releases.
    set sourcedir=%CD%
    set installpath="C:\tmp\minetest_install"
    set irrlichtpath="C:\tmp\irrlicht-1.7.2"
    

    set builddir=%sourcedir%\bvc10
    mkdir %builddir%
    pushd %builddir%
@@ -438,7 +438,7 @@ This is how we build Windows releases.
    popd
    echo Finished.
    exit /b 0
    

    :fail
    popd
    echo Failed.
@@ -495,6 +495,6 @@ patch is set to 0.
- Patch is incremented when the release only contains bugfixes and very
minor/trivial features considered necessary.

Since 5.0.0-dev and 0.4.17-dev, the dev notation refers to the next release, 
i.e.: 5.0.0-dev is the development version leading to 5.0.0. 
Since 5.0.0-dev and 0.4.17-dev, the dev notation refers to the next release,
i.e.: 5.0.0-dev is the development version leading to 5.0.0.
Prior to that we used `previous_version-dev`.