adding shortid to support deeper trees
indentation fix
fix to make it work with normal ObjectId, introduced custom idType option, fix for pathSeparator
Merge branch 'pr/4' into develop

* pr/4:
  fix to make it work with normal ObjectId, introduced custom idType option, fix for pathSeparator
  indentation fix
  adding shortid to support deeper trees

Conflicts:
	package.json
fix for npm test
Merge branch 'release/1.3.2'