[docs] added touchups to readme.md

README.md

@@ -57,11 +57,12 @@ Please see our ongoing [documentation](https://docs.aios.foundation/) for more i
 Git clone AIOS kernel
 ```bash
 git clone https://github.com/agiresearch/AIOS.git
-cd AIOS && git checkout v0.2.0.beta
+cd AIOS
 ```
 Create venv environment (recommended)
 ```bash
-python3.x -m venv venv # Only support for Python 3.10 and 3.11
+python3.x --version # Check if it is 3.10 or 3.11
+python3.x -m venv venv
 source venv/bin/activate
 ```
 or create conda environment
@@ -88,15 +89,15 @@ pip install -r requirements.txt
 <!-- Note: Please use `launch.py` for the WebUI, or `agent_repl.py` for the TUI. -->
 #### Configurations
 ##### Use with OpenAI API
-You need to get your OpenAI API key from https://platform.openai.com/api-keys.
+You need to get your OpenAI API key from https://platform.openai.com/api-keys. Note that API keys **cost money**.
 Then set up your OpenAI API key as an environment variable
 
 ```bash
 export OPENAI_API_KEY=<YOUR_OPENAI_API_KEY>
 ```
 
 ##### Use with Gemini API
-You need to get your Gemini API key from https://ai.google.dev/gemini-api
+You need to get your Gemini API key from https://ai.google.dev/gemini-api. Gemini is a free cloud LLM provider.
 
 ```bash
 export GEMINI_API_KEY=<YOUR_GEMINI_API_KEY>