Update README.md & Fix Husky can't work with Fnm issue

.husky/pre-commit

@@ -1 +1,4 @@
+if command -v fnm >/dev/null 2>&1; then
+  eval "$(fnm env)"
+fi
 pnpm exec lint-staged

README.md

@@ -1,2 +1,39 @@
 # Azon Seeker
-This browser extension is used to collect goods' information in amazon. 
+
+## Introduction
+
+This browser extension is used to collect goods' information on Amazon.
+
+## Setup
+
+### 1. Prepare Requirements
+
+Make sure the following software is installed:
+
+- node.js
+- pnpm
+
+### 2. Clone this Repo
+
+```shell
+git clone https://github.com/primedigitaltech/azon_seeker.git
+```
+
+### 3. Install the Node Dependencies
+
+```shell
+cd {path to repo}
+pnpm i
+```
+
+### 4. Run in Development Mode
+
+```shell
+pnpm dev
+```
+
+### 5. Load Extension on Browser
+
+Open the browser extension page.
+Toggle on development mode.
+Load the extension using the `extension/` folder.