Added dimension labels for all dataset creation.
Minor correction in docstring.
Added automatic naming for 1D event and nonuniform datasets.

Added dimension labels for all dataset creation.
Fixing a messed up rebase.
Merge branch 'subhasis' of https://github.com/subhacom/nsdf into subhasis
Merge pull request #17 from subhacom/subhasis

Labeling the dimensions which have dimension scales. It was missing in some cases.