Log start and end times (#256)
Log start and end times (#256)

* More logging and checks on external processes
More logging and checks on external processes
because this seems to be failing in my cron job run

* Log start and end time
I don't feel the need to timestamp everything yet, but When looking at server logs I need to know which run it is

* Format

NuKeeperDotNet/NuKeeper,skolima/NuKeeper,skolima/NuKeeper,AnthonySteele/NuKeeper,skolima/NuKeeper,NuKeeperDotNet/NuKeeper,skolima/NuKeeper,AnthonySteele/NuKeeper,NuKeeperDotNet/NuKeeper,NuKeeperDotNet/NuKeeper,AnthonySteele/NuKeeper,AnthonySteele/NuKeeper