Use a more realistic parameter sweep example

[pan14001]

The toy example of running -n0 hostname is not adaptable for most computations. Perhaps one can keep it to show the bare minimum to run the script, but we should document a larger, more typical parameter sweep example of embarrassingly parallel computation. It should also mention SBATCH --dependency singleton, illustrate recovering from failing jobs, and changing the resume order to favor jobs that have never been run before, have a low expect runtime and ignoring jobs that have too many failures.

[pan14001]

Somewhat addressed in examples/02-submit-resumable.slurm and documented in README.md#example-02-resumable

But an additional example 03 using an actual csv file for input parameters would be better!