Implemented .env file API key storage

.env.sample

@@ -0,0 +1 @@
+OPENAI_API_KEY=your_api_key

.gitignore

@@ -1,2 +1,4 @@
 venv
 openai_key.txt
+.venv
+.env

README.md

@@ -13,8 +13,11 @@ For a quick demonstration see my [demo video on twitter](https://twitter.com/bio
     python3 -m venv venv
     source venv/bin/activate
     pip install -r requirements.txt
+    cp .env.sample .env
 
-Add your openAI api key to `openai_key.txt` - _warning!_ by default this uses GPT-4 and may make many repeated calls to the api.
+Add your openAI api key to `.env` 
+
+_warning!_ By default wolverine uses GPT-4 and may make many repeated calls to the api.
 
 ## Example Usage
 

wolverine.py

@@ -5,13 +5,14 @@ import os
 import shutil
 import subprocess
 import sys
-
 import openai
 from termcolor import cprint
+from dotenv import load_dotenv
+
 
 # Set up the OpenAI API
-with open("openai_key.txt") as f:
-    openai.api_key = f.read().strip()
+load_dotenv()
+openai.api_key = os.getenv("OPENAI_API_KEY")
 
 
 def run_script(script_name, script_args):
@@ -51,7 +52,6 @@ def send_error_to_gpt(file_path, args, error_message, model):
     )
 
     # print(prompt)
-
     response = openai.ChatCompletion.create(
         model=model,
         messages=[