Merge pull request #17 from muell149/master

beanprod.yaml updates:

* add lumis per job example
* add more ttbar samples
Pack the sandbox without copying files around.
Update documentation.
Fix typo and style in docs.
Point PATH to ~/.local/bin in ND instructions.
Add a missing `--root=` to the docs.
Integrate exit code status information better.
Add notice to the docs to not overload ndcms via chirp.
Merge pull request #18 from muell149/master

Lumi Mask Addition
Include 'type' key in example config for simple jobs, as the default is cmssw.
Do not loop through both work and stageout directories if we are only checking the stageout directory.
Hack-ey fix (for now) for bijective mode with simple jobs.
Return output from simple jobs, if available.
Adding optional 'cycle args' argument for simple jobs, which cycles the given list of job arguments at job creation time.
Moving common JobProvider code to the base class; also, adding the possibility of including more than one task in a SimpleJob config.
Adding checkpointing at ID creation, sandbox creation, and task registration.
Adding a checkpoint for terminating lobster within the while loop.  This should not interrupt SQL operations, etc.
Include a checkpoint for restarts.
Print when being done.
Fix and improve limiting the plotting to a certain time range.

Now takes an offset from either start or end of processing to determine the
plotting range.