Add `BROWSER=none` to .env.default not to launch a browser
Add `BROWSER=none` to .env.default not to launch a browser

Launching a browser for the dev server's port (localhost:3000) is
confusing when Caddy is used.

yatsu/react-apollo-koa-example,yatsu/react-apollo-koa-example,yatsu/react-apollo-koa-example