add readme file

README.md

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+# My NixOS configuration
+
+Really similar to [dotfiles-void](https://git.meex.lol/MeexReay/dotfiles-void)
+
+## How to install
+
+- Copy your `hardware-configuration.nix` to `system/` folder
+- Copy your shadowsocks config to `modules/proxies/shadowsocks.json`. If you have no one, comment this line in `modules/proxies/default.nix`: `./shadowsocks.nix`
+- Remove these lines in `system/default.nix`:
+```nix
+hosts = {
+  "172.16.1.32" = [ # fix my sites on localhost
+    "meex.lol"
+    "git.meex.lol"
+    "files.meex.lol"
+  ];
+};
+```
+- Copy all the finished files to `/etc/nixos`