https://www.youtube.com/watch?v=KHrnOEVKxpc
Npm install --save in server and /src/client
Npm install --save mongoose in /src/api
Npm install --save mongodb in /src/api
Npm start in /src/api and in /src/client
Launch server and client. The app allow the user to show on a map his position and the position of his friends. He could ask people to be friend with him and be allowed to see his position. Register some location for while, delete it, archive it and show his history of position.