From https://help.github.com/en/articles/adding-an-existing-project-to-github-using-the-command-line
If you have a new project on your development machine and you're ready to move forward
go to your account github.com/youraccount
Create a new repo (with same name you are using on the development machine for the project) on github without a readme.md
Copy the address Eg: https://address.project.git
Go to development machine: