[meta] Add README and LICENSE.

LICENSE

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+MIT License
+
+Copyright (c) 2021 Keanu Timmermans
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# dotfiles
+
+My [dotfiles](https://wiki.archlinux.org/title/Dotfiles) for Kitty, ZSH, other programs, and additionally some scripts.
+
+These dotfiles are written on Arch Linux, so there is 0 guarantee they work on other systems.
+Although, since I'm using [dmitmel's dotfiles](https://github.com/dmitmel/dotfiles) in a submodule, I'm trusting they work on the following platforms:
+
+- Arch Linux,
+- Linux Mint,
+- server Ubuntu,
+- macOS with GNU coreutils (i.e. BSDs are not supported),
+- Android with Termux.
+
+If you are uncertain about what any of these things do, I recommend you:
+
+- Do not use them.
+- Read the source code, and, additionally,
+  - Read the source code of dmitmel's dotfiles.