Não entendi nada:
git push -u origin master
Resposta do meu comando acima:
To https://github.com/marceloscientist/coursesOnTheFly ! [rejected] master -> master (non-fast-forward)
error: failed to push some refs to 'https://github.com/marceloscientist/coursesOnTheFly' hint: Updates were rejected because the tip of your current branch is behind hint: its remote counterpart. Integrate the remote changes (e.g. hint: 'git pull ...') before pushing again. hint: See the 'Note about fast-forwards' in 'git push --help' for details.
