Refactor OpenAI configuration in README and test files; remove unused generation and retry configurations

Author: nginH

README.md

@@ -27,17 +27,12 @@ npm install @nginh/llmforge@1.0.0
 ```typescript
 import { RunnerClient } from 'llmforge';
 
-const config = {
+const openaiConfig = {
    llmConfig: {
-      apiKey: process.env.OPENAI_API_KEY,
+      apiKey: process.env.OPENAI_API_KEY || '',
       provider: 'openai',
       model: 'gpt-3.5-turbo',
-      generationConfig: {
-         temperature: 0.7,
-         maxOutputTokens: 150,
-      },
    },
-   enableFallback: false,
 };
 
 const client = await RunnerClient.create(config);

test.js

@@ -17,16 +17,7 @@ async function testOpenAI() {
          apiKey: process.env.OPENAI_API_KEY || '',
          provider: 'openai',
          model: 'gpt-3.5-turbo',
-         generationConfig: {
-            temperature: 0.7,
-            maxOutputTokens: 150,
-         },
-         retryConfig: {
-            maxRetries: 3,
-            retryDelay: 1000,
-         },
       },
-      enableFallback: false,
    };
 
    try {