handle pub publish warnings (#65)

Author: csells

.gitignore

@@ -28,7 +28,6 @@ migrate_working_dir/
 .dart_tool/
 build/
 example/.env
-example/lib/firebase_options.dart
 example/firebase.json
 example/.firebaserc
 example/android/app/google-services.json

example/.gitignore

@@ -44,7 +44,3 @@ app.*.map.json
 /android/app/debug
 /android/app/profile
 /android/app/release
-
-# custom
-gemini_api_key.dart
-firebase_options.dart