update readme

apps/codexgraph_agent/README.md

@@ -7,24 +7,37 @@
 **CodexGraph Agent** is an advanced multi-tasking agent that integrates a language model (LM) agent with a code graph database interface. By utilizing the structural characteristics of graph databases and the versatility of the Cypher query language, CodexGraph enables the LM agent to formulate and execute multi-step queries. This capability allows for precise context retrieval and code navigation that is aware of the code's structure.
 
 ## 🚀 How to Use
-### 1️⃣ Set Up the Python Environment
+
+### 1️⃣ Set Up Environment
+- Install Neo4j Desktop:
+ - Download and install [Neo4j Desktop](https://neo4j.com/download/)
+ - Set the password for the default user `neo4j`
+ - Create a new project and install a new database with database name `codexgraph`
+ - Get bolt port as url from the database settings, typically it is `bolt://localhost:7687`
+
+
 - Install dependencies:
 
 ```bash
 pip install -r requirements.txt
 ```
 - Build the graph database environment:
-Create a separate `Python 3.7` environment and install the required dependencies:
+Create a separate `Python<=3.9` environment and install the required dependencies:
 
 ```bash
 pip install -r build_requirements.txt
 ```
-## 2️⃣ Locate the Graph Database Environment
-- Find the Python path:
+This separate environment is used to index the project and save to graph database with certain python version for some package.
+### 2️⃣ Locate the Graph Database Environment
+- Find the Python path on Mac/Linux:
+```bash
+which python
+```
+or on Windows:
 ```bash
 where python
 ```
-## 3️⃣ Run CodexGraph Agent
+### 3️⃣ Run CodexGraph Agent
 - Navigate to the modelscope-agent directory:
 ```bash
 cd modelscope-agent