Add node modules stuff to path in current shell

.bashrc

workon_node_env() {
  current_dir=`pwd`
  if [ -d "node_modules" ]; then
    export ORIGINAL_PATH=$PATH
    for f in `ls ${current_dir}/node_modules/`
    do.
      export PATH="${PATH}:${current_dir}/node_modules/${f}/bin"
    done
    deactivatenode(){
      export PATH=$ORIGINAL_PATH
      unset -f deactivatenode
    }
  fi                                                                                
}