add function create file
Merge branch 'master' of https://github.com/PhucPM/nodejs
Merge branch 'master' of https://github.com/PhucPM/nodejs
Merge branch 'master' of https://github.com/PhucPM/nodejs
Merge branch 'master' of https://github.com/PhucPM/nodejs
filemanager-express
Merge branch 'master' of https://github.com/PhucPM/nodejs

* 'master' of https://github.com/PhucPM/nodejs:
  fix core