Document the "-m plop.collector" functionality.
Document the "-m plop.collector" functionality.

Document how to use "python -m plop.collector".

Also, specify how to write out collector.stack_counts.

bdarnell/plop,bdarnell/plop,omidraha/plop,fabianvf/plop,fabianvf/plop,bdarnell/plop,omidraha/plop,fabianvf/plop,fabianvf/plop,omidraha/plop,omidraha/plop,omidraha/plop,bdarnell/plop,fabianvf/plop,bdarnell/plop