Added own readme file

README.md

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+# LuaJIT + CMake & UTF8-paths-on-Windows
+There is the modified version of LuaJIT that has the next difference from the original version:
+* In addition to its default GNU Make-based build, there is a CMake-based build was added
+* Enforces the UTF-8 charset for file system-related functions to ensure the equal result on all supported platforms (without this addition, locale-depending ANSI charsets used on Windows) (You should specify the `-DLUAJIT_FORCE_UTF8_FOPEN=ON` CMake option to enable this feature)
+
+If you find a bug using CMake build, please **DON'T REPORT IT TO OFFICIAL LuaJIT developers**, as they refuse to take the CMake building system support. So, you MUST verify the [latest original version](https://github.com/LuaJIT/LuaJIT) using the GNU Make-based building system to ensure that the same bug gets reproduced too:
+* If the bug gets reproduced at both CMake and GNU-Make-based builds, feel free to report the bug to [official LuaJIT developers](https://github.com/LuaJIT/LuaJIT/issues).
+* If the bug gets reproduced at the CMake-based build only, however, doesn't reproduce at the official GNU-Make-based build, you [should report this bug to me](https://github.com/WohlSoft/LuaJIT/issues).
+
+# Original readme
+## README for LuaJIT 2.1.0-beta3
+LuaJIT is a Just-In-Time (JIT) compiler for the Lua programming language.
+
+Project Homepage: https://luajit.org/
+
+LuaJIT is Copyright (C) 2005-2022 Mike Pall.
+LuaJIT is free software, released under the MIT license.
+See full Copyright Notice in the COPYRIGHT file or in luajit.h.
+
+Documentation for LuaJIT is available in HTML format.
+Please point your favorite browser to:
+
+ doc/luajit.html