Wrap extra flags to cater for non-bash terminals

`pip install -e .[web]` does not work on zsh. Wrapping `.web` in quotes makes
the command in all terminals

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index b0b22ff..8b78ebd 100644
--- a/README.md
+++ b/README.md
@@ -166,7 +166,7 @@ To run it locally:
 ```
 virtualenv --python python3 venv
 . venv/bin/activate
-pip install -e .[web]
+pip install -e ".[web]"
 env FLASK_APP=bh20simplewebuploader/main.py flask run
 ```