Added instructions to README for creating an OpenAI key and information on API…

Added instructions to README for creating an OpenAI key and information on API key security and pricing disclosures.

README.md

@@ -23,6 +23,10 @@ Looking to enrich your Minecraft journey with deep conversations and lasting all
    or [CurseForge](https://www.curseforge.com/minecraft/mc-mods/fabric-api).
 3. **Install CreatureChat Mod**: Place `creaturechat-*.jar` and `fabric-api-*.jar` into your `.minecraft/mods`
    folder.
+4. **Create an OpenAI API key**: Visit https://platform.openai.com/api-keys, and use the `+ Create new secret key` button.
+   Copy/Paste your key into the `/creaturechat key set <your-secret-key-here>` command. 
+   By default, we use the `gpt-3.5-turbo`, although we support most models. Review pricing at 
+   https://openai.com/pricing#language-models.
 
 ## Commands
 The CreatureChat mod allows users to configure settings via in-game commands. Here's how to use them:
@@ -72,6 +76,23 @@ be updated. Below are the general steps for this upgrade process.
 - [Source Code](http://gitlab.openshot.org/minecraft/creature-chat)
 - [Join us on Discord](https://discord.gg/m9dvPFmN3e)
 
+## Costs Associated with Third-Party LLM APIs
+Using third-party Large Language Model (LLM) APIs, such as OpenAI, will incur usage-based fees. 
+These fees are typically based on the amount of data processed or the number of requests made 
+to the service. Before integrating or using these APIs, please review the pricing details 
+provided by the API provider. Be aware of the potential costs and plan your usage accordingly 
+to avoid unexpected charges.
+
+By using this software and integrating third-party APIs, you acknowledge and agree to take 
+full responsibility for securing your API keys and managing API usage within the terms and 
+cost structures outlined by the providers.
+
+## API Key Confidentiality
+Always keep your API keys confidential to prevent unauthorized access and potential misuse.
+Exposing your API key publicly can lead to security risks, unauthorized usage, and potential
+service abuse. Treat your API keys as sensitive information and only share them with trusted
+parties within secure environments.
+
 ## License
 
     CreatureChat is a Minecraft mod which allows chat conversations with entities.