Changed naming of output files for better resolution (timestamp). Minor type correction in README file for examples.
Modification to nsdfdata to pass ttype parameter to set the data type of
the time array in nouniform data. Same propagated to nsdfwriter.py.
Fix in benchmark_writer to set the ttype to 32 bit (to make the
comparison between different dialects meaningful). Updated run_cprofile
to make the script wait for subprocess to finish (although python docs
for subprocess.call says the parent process will wait, that does not
seem to be the case).
Added a single method in NSDFWriter to put all the file
attributes (environment) at one go. used the same in hodgkin_huxley
example.
Updated Hodgkin-Huxley demo with an example of reading data.
hodgkin-huxley example: corrected time format to iso.
Merge pull request #30 from subhacom/subhasis

Correction of time stamps to iso format in hodgkin huxley demo