Update README.md

Author: cocoindex-dev

README.md

@@ -48,14 +48,22 @@ collector.export(...)
 
 ## Data Freshness
 As a data framework, CocoIndex takes it to the next level on data freshness. Incremental processing is one of the core values provided by CocoIndex.
+
+<p align="center">
+    <img src="https://github.com/user-attachments/assets/4ead7275-8df6-42aa-ba06-81248aa7f8bf" alt="Incremental Processing" width="800">
+</p>
+
 The frameworks takes care of
 - Change data capture
 - Figuring out what exactly needs to be updated, and only updating that without having to recompute everything throughout.
 This makes it fast to reflect any source updates to the target store. If you have concerns with surfacing stale data to AI agents and are spending lots of efforts working on infra piece to optimize the latency, the framework actually handles it for you.
 
 
 ## Quick Start:
-If you're new to CocoIndex 🤗, we recommend checking out the 📖 [Documentation](https://cocoindex.io/docs) and ⚡ [Quick Start Guide](https://cocoindex.io/docs/getting_started/quickstart). We also have a ▶️ [quick start video tutorial](https://youtu.be/gv5R8nOXsWU?si=9ioeKYkMEnYevTXT) for you to jump start.
+If you're new to CocoIndex, we recommend checking out 
+- 📖 [Documentation](https://cocoindex.io/docs)
+- ⚡  [Quick Start Guide](https://cocoindex.io/docs/getting_started/quickstart)
+- 🎬 [Quick Start Video Tutorial](https://youtu.be/gv5R8nOXsWU?si=9ioeKYkMEnYevTXT) 
 
 ### Setup 
 1. Install CocoIndex Python library
@@ -64,17 +72,12 @@ If you're new to CocoIndex 🤗, we recommend checking out the 📖 [Documentati
 pip install -U cocoindex
 ```
 
-2. Setup Postgres with pgvector extension; or bring up a Postgres database using docker compose:
-
-    - Make sure Docker Compose is installed: [docs](https://docs.docker.com/compose/install/)
-    - Start a Postgres SQL database for cocoindex using our docker compose config:
+2. [Install Postgres](https://cocoindex.io/docs/getting_started/installation#-install-postgres) if you don't have one. CocoIndex uses it for incremental processing.
 
-    ```bash
-    docker compose -f <(curl -L https://raw.githubusercontent.com/cocoindex-io/cocoindex/refs/heads/main/dev/postgres.yaml) up -d
-    ```
 
 ### Start your first indexing flow!
 Follow [Quick Start Guide](https://cocoindex.io/docs/getting_started/quickstart) to define your first indexing flow.
+
 A common indexing flow looks like:
 
 ```python