Merge pull request #13 from datsfilipe/datsfilipe-patch-1

docs: update README.md -> add table of contents and install  section

Author: datsfilipe

README.md

@@ -4,6 +4,74 @@
 
 Trxsh is a simple and efficient command-line trash manager written in Go. It allows you to safely delete, list, restore, and permanently remove files from your system's trash directory.
 
+### Table of Contents
+
+- [Installation](#installation)
+- [Features](#features)
+- [Usage](#usage)
+- [Trash Specification](#trash-specification)
+- [License](#license)
+
+### Installation
+
+- Arch:
+
+The package is now in [AUR](https://aur.archlinux.org/packages/trxsh), so to install it you can use an AUR helper like `yay`:
+
+```bash
+yay -Syu trxsh
+```
+
+or go through the process manually:
+
+```bash
+sudo pacman -S --needed git base-devel
+git clone https://aur.archlinux.org/trxsh.git
+cd yay
+makepkg -si
+```
+
+- NixOS:
+
+For now you can add a custom derivation to your NixOS config, like so:
+
+```nix
+{
+  stdenv,
+  lib,
+  fetchurl,
+}: let
+  source = builtins.fromJSON (builtins.readFile ./conf/source.json);
+in
+  stdenv.mkDerivation rec {
+    pname = "trxsh";
+    version = source.version;
+
+    src = fetchurl {
+      url = "https://github.com/datsfilipe/trxsh/releases/download/${version}/trxsh-${version}-linux-amd64.tar.gz";
+      sha256 = source.sha256;
+    };
+
+    installPhase = ''
+      mkdir -p $out/bin
+      tar -xzf $src -C $out/bin
+      chmod +x $out/bin/trxsh
+    '';
+
+    meta = with lib; {
+      description = "trxsh is a terminal-based trash manager";
+      homepage = "https://github.com/datsfilipe/trxsh";
+      license = licenses.mit;
+      platforms = ["x86_64-linux"];
+    };
+
+    unpackPhase = ":";
+    dontStrip = true;
+  }
+```
+
+In future I'll try adding it to `nixpkgs`.
+
 ### Features
 
 - deletion: move files to a designated trash directory instead of permanently deleting them.​