`git commit` + `git push` in a single command

gistfile1.sh

function gp() {
  git commit -m '$1'
  if [ "$#" -eq 2 ]; then
    git push origin $2
  else
    git push origin master
  fi
}

$ gp 'foo bar'
#=> git commit -m 'foo bar' && git push origin master

$ gp 'foo bar' dev
#=> git commit -m 'foo bar' && git push origin dev