Add your local project to GitHub
First, Create new repository on GitHub. Don’t “Initialize this repository with a README”.

Then open command line tool on your Mac, go to your working directory:
$ cd /your/project/directory
Init git locally, and add all file on git:
$ git init
$ git add .
Commit and push:
$ git commit -m "initial commit"
$ git remote add origin https://github.com/rhoulay/hello.git
$ git push -u origin master
Now your local project add to Github, you can commit and push anytime after your edit your files:
$ git add your-changed-file
$ git commit -m "some file change"
$ git push