Simple rails wrapper, which transparently handles Rails 2.x vs. Rails 3 projects.

rails_wrapper.sh

## rails wrapper
function rails() {
  if [ -x `pwd`/script/rails ]; then
    echo "[run] ./script/rails"
    `pwd`/script/rails $*
  elif [ -f `pwd`/Gemfile ]; then
    echo "[run] bundle exec rails"
    bundle exec rails $*
  else
    _rails_bin=$(\which rails | tail -1)
    echo "[run] $_rails_bin"
    $_rails_bin $*
  fi
}