docs: add brew installation setup in readme (#25)

* docs: add brew installation setup in readme

Signed-off-by: Kunal Singh <kunalsin9h@gmail.com>

* updated TOC

Signed-off-by: Kunal Singh <kunalsin9h@gmail.com>

* removed also for 1st install option

Signed-off-by: Kunal Singh <kunalsin9h@gmail.com>

---------

Signed-off-by: Kunal Singh <kunalsin9h@gmail.com>

README.md

@@ -56,6 +56,7 @@ pnpm add <package-name>
   - [🔥 Features](#-features)
   - [Supported Package Managers](#supported-package-managers)
   - [Installation](#installation)
+    - [Homebrew](#homebrew)     
     - [Binaries](#binaries)
     - [Build from Source](#build-from-source)
   - [Usage](#usage)
@@ -89,6 +90,15 @@ PMG supports the following package managers:
 
 ## Installation
 
+### Homebrew
+
+You can install `pmg` using `homebrew` in MacOS and Linux
+
+```bash
+brew tap safedep/tap
+brew install safedep/tap/pmg
+```
+
 ### Binaries
 
 Download the latest binary from the [releases page](https://github.com/safedep/pmg/releases).