chore: update README

Cargo.toml

@@ -9,7 +9,7 @@ readme = "README.md"
 homepage = "https://github.com/dotinx/naj"
 repository = "https://github.com/dotinx/naj"
 categories = ["command-line-utilities"]
-exclude = ["tests/", "scripts/",]
+exclude = ["scripts/","assets/"]
 
 
 [dependencies]

README.md

@@ -1,4 +1,6 @@
-# Naj (我 `/*ŋˤajʔ/`)
+# Naj
+
+![Naj Banner](assets/naj-banner.jpg)
 
 **Naj** is a lightweight, secure, and idempotent wrapper for Git, written in Rust. It solves the chaos of managing multiple Git identities (Work vs. Personal) by strictly isolating configurations and preventing accidental identity leaks.
 
@@ -12,9 +14,17 @@
 
 ## 📦 Installation
 
+### From Cargo
+
+```bash
+cargo install naj
+```
+
 ### From Source
 
 ```bash
+git clone https://github.com/dotinx/naj.git
+cd naj
 cargo install --path .
 ```