feat: Add Homebrew formula and install guide

Author: KartikLabhshetwar

Formula/lazycommit.rb

@@ -0,0 +1,22 @@
+require "language/node"
+
+class Lazycommit < Formula
+  desc "Writes your git commit messages for you with AI using Groq"
+  homepage "https://github.com/KartikLabhshetwar/lazycommit"
+  url "https://registry.npmjs.org/lazycommitt/-/lazycommitt-1.0.8.tgz"
+  sha256 "a1b0e0e82a0f1ec557329ea7382759587acf6d0c0c901f8905f1b40fdeb1f311"
+  license "Apache-2.0"
+
+  depends_on "node"
+
+  def install
+    system "npm", "install", *Language::Node.std_npm_install_args(libexec)
+    bin.install_symlink Dir["#{libexec}/bin/*"]
+  end
+
+  test do
+    assert_match version.to_s, shell_output("#{bin}/lazycommit --version")
+  end
+end
+
+

README.md

@@ -22,6 +22,19 @@
    npm install -g lazycommitt
    ```
 
+### Install via Homebrew (macOS)
+
+```sh
+brew tap kartiklabhshetwar/lazycommit
+brew install lazycommit
+```
+
+Upgrade:
+
+```sh
+brew upgrade lazycommit
+```
+
 2. Retrieve your API key from [Groq Console](https://console.groq.com/keys)
 
    > Note: If you haven't already, you'll have to create an account and get your API key.