minor change in ndf_tags.py
after merge
Fixed graph error. Now it's visible.
Merge pull request #218 from kedar2a/mongokit

Fixed graph error. Now it's visible.
bug resolved related to file name url
Merge pull request #219 from krishna31/mongokit

bug resolved in file url
Merge branch 'mongokit' of https://github.com/gnowledge/gstudio into mongokit