Integrating the Answers endpoint

Now we'll go back and add some code to our routes/answer.js file so that it calls the OpenAI Answers endpoint to answer the user's question, rather than returning the placeholder text:

1. Open the routes/answer.js file and do the following.
2. Delete all of the code after line 5.
3. Starting on line 5, add the following code followed by a line return:

   const apiKey = process.env.OPENAI_API_KEY;
   const client = axios.create({
     headers: { 'Authorization': 'Bearer ' + apiKey }
   });

4. Next, add the following code with a line return after it:

   const documents = [
     "I am a day older than I was yesterday.<|endoftext|>",
     "I build applications that use GPT-3.<|endoftext|>",
     "My preferred programming is Python.<|endoftext|>"
   ]

5. Add the following code starting on line 16 followed by a line return:

   const endpoint = 'https://api...