docs: remove extraneous --save and yarn install instructions (#710)

Author: stainless-bot

CONTRIBUTING.md

@@ -42,9 +42,7 @@ If you’d like to use the repository from source, you can either install from g
 To install via git:
 
 ```bash
-npm install --save git+ssh://[email protected]:openai/openai-node.git
-# or
-yarn add git+ssh://[email protected]:openai/openai-node.git
+npm install git+ssh://[email protected]:openai/openai-node.git
 ```
 
 Alternatively, to link a local copy of the repo:

README.md

@@ -11,10 +11,7 @@ To learn how to use the OpenAI API, check out our [API Reference](https://platfo
 ## Installation
 
 ```sh
-# install from NPM
-npm install --save openai
-# or
-yarn add openai
+npm install openai
 ```
 
 You can import in Deno via: