adding forcing to rebuild the images

Author: K-Jo

README.md

@@ -26,6 +26,10 @@ $ cd AnimalRecognitionDemo
 $ git lfs install && git lfs fetch && git lfs checkout
 $ docker-compose up
 ```
+If something went wrong, e.g. you skipped installing git-lfs, you need to force docker-compose to rebuild the containers
+```
+$ docker-compose up --force-recreate --build
+```
 Open a second terminal for the video capturing:
 ```
 $ pip install -r camera/requirements.txt