trying to sync the changes made to the repo. I'm currently signed in to both codeschool and github.
Have you forked the repo first then made the changes? It looks like you are trying to push up to the main Codeschool-Projects repo.
Not to hijack this thread, but I can't seem to get the gitHub to recognize Atom. It only gives me 3 options in which to open which are the shell, the github site or explorer. Not sure what to do.
I'm having the same issue as the OP and getting the same error message when I try to sync. I made sure I forked the repo first. Not sure what I'm missing.