docs: update README with latest changes

Author: m7medVision

README.md

@@ -4,7 +4,7 @@ AI-powered Git commit message generator that analyzes your staged changes and ge
 
 ## Features
 
-- Generates commit messages using AI (currently supports GitHub Copilot)
+- Generates commit messages using AI (supports OpenAI, OpenRouter, and GitHub Copilot)
 - Interactive prompts for accepting, editing, or canceling commit messages
 - Easy to extend with other AI providers
 - Built with Go for performance and portability
@@ -37,6 +37,12 @@ Then generate a commit message:
 lazycommit commit
 ```
 
+You can also run the interactive configuration to set your preferred provider and model:
+
+```bash
+lazycommit config set
+```
+
 For automatic commit without prompting:
 
 ```bash
@@ -45,11 +51,20 @@ lazycommit commit -a
 
 ## Configuration
 
-Create a `.lazycommit` file in your home directory:
+Create a `.lazycommit.yaml` file in your home directory or project root:
 
 ```yaml
-provider: copilot
-api_key: your-copilot-api-key
+active_provider: openai
+providers:
+  openai:
+    api_key: "your-openai-api-key"
+    model: "gpt-4o"
+  openrouter:
+    api_key: "your-openrouter-api-key"
+    model: "anthropic/claude-3-opus"
+  copilot:
+    # No API key needed, it uses the GitHub CLI token
+    model: "gpt-4o"
 ```
 
 ## Development