install mongodb on mac
// updated 2022
// watch this video it will help you download and configure mongodb
// locally so that mongod command will work
// I did not made the video nor I would benefit but after spending more
// than one hour installing it and not make it work this helped me alot
// and finally made it work
// Use this for macos latest versions
// https://www.youtube.com/watch?v=4crXgQZG4W8