`reset-resend-create-batches.js -i <source.json> -o batches` breaks up
the source.json file into multiple batches, storing each batch file into the
`batches` subdirectory.
`reset-send-batch.sh <batch_file.json>` will reset and send an email to all
accounts in the batch.
`reset-send-all-batches <batch_directory>` will reset and send an email to all
accounts in all batches found in the `batch_directory`