Accept access-key and secret-key as input instead of command line

.gitignore

@@ -104,3 +104,4 @@ venv.bak/
 .mypy_cache/
 
 .idea/*
+.DS_Store

enumerate-iam.py

@@ -1,23 +1,30 @@
-#!/usr/bin/env python
+#!/opt/homebrew/bin/python3
 import argparse
+import getpass
 
 from enumerate_iam.main import enumerate_iam
 
 
 def main():
     parser = argparse.ArgumentParser(description='Enumerate IAM permissions')
 
-    parser.add_argument('--access-key', help='AWS access key', required=True)
-    parser.add_argument('--secret-key', help='AWS secret key', required=True)
+    parser.add_argument('--access-key', help='AWS access key')
+    parser.add_argument('--secret-key', help='AWS secret key')
     parser.add_argument('--session-token', help='STS session token')
     parser.add_argument('--region', help='AWS region to send API requests to', default='us-east-1')
 
     args = parser.parse_args()
 
+    if args.access_key is None:
+        args.access_key = input("Enter AWS access key: ")
+
+    if args.secret_key is None:
+        args.secret_key = getpass.getpass("Enter AWS secret key: ")
+
     enumerate_iam(args.access_key,
-                  args.secret_key,
-                  args.session_token,
-                  args.region)
+                      args.secret_key,
+                      args.session_token,
+                      args.region)
 
 
 if __name__ == '__main__':