error: src refspec master does not match any.

nothing added to commit but untracked files present (use "git add" to track)
Monas-MacBook-Pro:02_02 mona$ vi README.md
Monas-MacBook-Pro:02_02 mona$ git add .
Monas-MacBook-Pro:02_02 mona$ git commit -m "fix"
[progress b4a8baa] fix
 1 file changed, 2 insertions(+)
Monas-MacBook-Pro:02_02 mona$ git push origin master
error: src refspec master does not match any.
error: failed to push some refs to 'https://github.com/monajalal/jupyter_notebooks.git'
Monas-MacBook-Pro:02_02 mona$ git remote -v
jwasham	https://github.com/jwasham/google-interview-university (fetch)
jwasham	https://github.com/jwasham/google-interview-university (push)
origin	https://github.com/monajalal/jupyter_notebooks.git (fetch)
origin	https://github.com/monajalal/jupyter_notebooks.git (push)