This gives better feedback on what arguments are required
$ python3 scripts/aws/create.py
usage: create.py [-h] numBootstraps numNodes
create.py: error: the following arguments are required: numBootstraps,
numNodes
$ python3 scripts/aws/create.py -h
usage: create.py [-h] numBootstraps numNodes
Start a number of AVA nodes on Amazon EC2
positional arguments:
numBootstraps
numNodes
optional arguments:
-h, --help show this help message and exit