Update readme

Author: Guantong

README.md

@@ -1,10 +1,28 @@
 # OpenAI API for Rust
 
-A community-maintained library provides a simple and convenient way to interact with the OpenAI API.
-
 ![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/openai-rs/openai-api/rust.yml?style=flat-square)
 ![GitHub](https://img.shields.io/github/license/openai-rs/openai-api?style=flat-square)
 
+A community-maintained library provides a simple and convenient way to interact with the OpenAI API.
+
+## API
+
+check [official API reference](https://platform.openai.com/docs/api-reference)
+|API|Support|
+|---|---|
+|Models|✔️|
+|Completions|✔️|
+|Chat|✔️|
+|Edits|✔️|
+|Images|✔️|
+|Embeddings|✔️|
+|Audio|✔️|
+|Files|❌|
+|Fine-tunes|❌|
+|Moderations|❌|
+|Engines|❌|
+___
+
 ## Usage
 
 Add the following to your Cargo.toml file:
@@ -44,24 +62,6 @@ Output:
 choice: Some("What day of the week is it?\n")
 ```
 
-## API
-
-check [official API reference](https://platform.openai.com/docs/api-reference)
-|API|Support|
-|---|---|
-|Models|✔️|
-|Completions|✔️|
-|Chat|✔️|
-|Edits|✔️|
-|Images|✔️|
-|Embeddings|✔️|
-|Audio|✔️|
-|Files|❌|
-|Fine-tunes|❌|
-|Moderations|❌|
-|Engines|❌|
-___
-
 ## License
 
 This library is distributed under the terms of the MIT license. See [LICENSE](LICENSE) for details.