pull off job start/stop time after job completes
add getter functions so start and finish times are saved
add explanitory code comments, handle getStartTime() returning zero, and remove commented out code
show each m/r job's total duration
include moment lib
make sure time parts formatted with two digits
Stop trying to contact lipstick server if we fail to save plan
Allow disabling of sample output.
Merge pull request #33 from NathanBates/disable_flags

Stop talking to server if plan save fails.  Allow disabling of sample output.
Merge pull request #28 from mortardata/upstream_staging_track_mr_job_duration

Display Map/Reduce Job Duration