[nodejs] (3 commits) ...update documentation in macros file

[T.C. Hollingsworth]

Summary of changes:

  5a2667d... nodejs-symlink-deps: only create symlink if target exists (*)
  af5d695... nodejs-symlink-deps: symlink devDependencies when --check i (*)
  d73ff2e... update documentation in macros file (*)

(*) This commit already existed in another branch; no separate mail sent