Everything should be made as simple as possible, but no simpler.
Octopress Pushing Error to GitHub
When You get something like that
## Pushing generated _deploy website
! [rejected] master -> master (non-fast-forward)
error: failed to push some refs to 'email@example.com:ssledz/ssledz.github.io.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Integrate the remote changes (e.g.
hint: 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.