docs: Update README.md (#7)

* docs: Update README.md

* Update README.md

* Update README.md

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Co-authored-by: Wenxin Du <117315983+duwenxin99@users.noreply.github.com>

Author: averikitsch

README.md

@@ -1,21 +1,27 @@
 # Gemini CLI Extension - Cloud SQL for SQL Server
 
+> [!NOTE]
+> This extension is currently in beta, and may see breaking changes until the first stable release (v1.0).
+
 This Gemini CLI extension provides a set of tools to interact with [Cloud SQL for SQL Server](https://cloud.google.com/sql/docs/sqlserver) instances. It allows you to manage your databases, execute queries, explore schemas, and troubleshoot issues directly from the [Gemini CLI](https://google-gemini.github.io/gemini-cli/), using natural language prompts.
 
+Learn more about [Gemini CLI Extensions](https://github.com/google-gemini/gemini-cli/blob/main/docs/extension.md).
+
 ## Why Use the Cloud SQL for SQL Server Extension?
 
 * **Seamless Workflow:** As a Google-developed extension, it integrates seamlessly into the Gemini CLI environment. No need to constantly switch contexts for common database tasks.
 * **Natural Language Management:** Stop wrestling with complex commands. Explore schemas and query data by describing what you want in plain English.
 * **Code Generation:** Accelerate development by asking Gemini to generate data classes and other code snippets based on your table schemas.
-
 ## Prerequisites
 
 Before you begin, ensure you have the following:
 
-* [Gemini CLI](https://github.com/google-gemini/gemini-cli) installed.
+* [Gemini CLI](https://github.com/google-gemini/gemini-cli) installed with version +v0.6.0.
 * A Google Cloud project with the **Cloud SQL Admin API** enabled.
 * IAM Permissions:
   * Cloud SQL Client (`roles/cloudsql.client`)
+  * Cloud SQL Viewer (`roles/cloudsql.viewer`)
+  * Cloud SQL Admin (`roles/cloudsql.admin`)
 
 ## Installation
 
@@ -38,13 +44,18 @@ Set the following environment variables before starting the Gemini CLI:
 * `CLOUD_SQL_MSSQL_PASSWORD`: The password for the database user.
 * `CLOUD_SQL_MSSQL_IP_TYPE`: (Optional) The IP type i.e. “Public” or “Private” (Default: Public).
 
+Ensure [Application Default Credentials](https://cloud.google.com/docs/authentication/gcloud) are available in your environment.
+
 > [!NOTE]
 > When using private IPs with Cloud SQL for SQL Server, you must use a Virtual Private Cloud (VPC) network.
 
 ## Usage Examples
 
 Interact with Cloud SQL for SQL Server using natural language:
 
+* **Provision Infrastructure:**
+   * "Create a new Cloud SQL for SQL Server instance named 'e-commerce-prod' in the 'my-gcp-project' project."
+   * "Create a new user named 'analyst' with read access to all tables."
 * **Explore Schemas and Data:**
   * "Show me all tables in the 'orders' database."
   * "What are the columns in the 'products' table?"
@@ -54,8 +65,18 @@ Interact with Cloud SQL for SQL Server using natural language:
 
 ## Supported Tools
 
-* `list_tables`: Use this tool to list tables and descriptions.
-* `execute_sql`: Use this tool to execute any SQL statement.
+*   **Admin:**
+   	* `create_instance`: Use this tool to create an Postgres instance.
+   	* `create_user`: Use this tool to create Postgres-BUILT-IN or IAM-based users.
+   	* `get_instance`: Use this tool to get details about an Postgres instance.
+   	* `get_user`: Use this tool to get details about a user.
+   	* `list_instances`: Use this tool to list instances in a given project and location.
+   	* `list_users`: Use this tool to list users in a given project and location.
+    * `wait_for_operation`: Use this tool to poll the operations API until the operation is done.
+
+*   **Data:**
+    * `list_tables`: Use this tool to list tables and descriptions.
+    * `execute_sql`: Use this tool to execute any SQL statement.
 
 ## Additional Extensions