add pip install option to README

README.md

@@ -38,7 +38,19 @@ LEANN achieves this through *graph-based selective recomputation* with *high-deg
 ✨ **No Accuracy Loss:** Maintain the same search quality as heavyweight solutions while using 97% less storage.
 
 ## Installation
-> `pip leann` coming soon!
+
+LEANN provides two installation methods: **pip install** (quick and easy) and **build from source** (recommended for development).
+
+### 🚀 Quick Install (Recommended for most users)
+
+```bash
+pip install leann
+```
+
+### 🔧 Build from Source (Recommended for development)
+
+For development, we recommend building from source:
+
 ```bash
 git clone git@github.com:yichuan-w/LEANN.git leann
 cd leann
@@ -65,7 +77,7 @@ uv sync
 ```
 
 
-**Ollama Setup (Recommended for full privacy):**
+<!-- **Ollama Setup (Recommended for full privacy):**
 
 > *You can skip this installation if you only want to use OpenAI API for generation.*
 
@@ -89,7 +101,7 @@ ollama serve &
 
 # Pull a lightweight model (recommended for consumer hardware)
 ollama pull llama3.2:1b
-```
+``` -->
 
 ## Quick Start in 30s
 
@@ -465,4 +477,3 @@ This work is done at [**Berkeley Sky Computing Lab**](https://sky.cs.berkeley.e
 <p align="center">
   Made with ❤️ by the Leann team
 </p>
-