Commands in README.md don't work

[vyaryza]

I tried to use those commands and they don't work:
$ sed -i '' 's?"grant"?"http://localhost:8081/lockdin/token"?g' data/parameters.json
$ sed -i '' 's?"access"?"http://localhost:8081/lockdin/resource"?g' data/parameters.json

probably it should be
$ sed -i 's?"grant"?"http://localhost:8081/lockdin/token"?g' data/parameters.json
$ sed -i 's?"access"?"http://localhost:8081/lockdin/resource"?g' data/parameters.json
instead

[muffetlab]

The same issue. Thanks to vyaryza.