push -- send local repository changes to remote

To send local commits to remote repository, use git push:

$ git push
Counting objects: 10, done.
Compressing objects: 100% (8/8), done.
Writing objects: 100% (8/8), 984 bytes, done.
Total 8 (delta 4), reused 0 (delta 0)
To git@github.com:pmichaud/book.git
   8d93fcb..a2886d4  master -> master
$ 

This works if you have write authorization to the remote repository