$ pip install aws-vapor

$ aws-vapor --help
usage: aws-vapor [--version] [-v | -q] [--log-file LOG_FILE] [-h] [--debug]

AWS CloudFormation Template Generator

optional arguments:
  --version            show program's version number and exit
  -v, --verbose        Increase verbosity of output. Can be repeated.
  -q, --quiet          Suppress output except warnings and errors.
  --log-file LOG_FILE  Specify a file to log output. Disabled by default.
  -h, --help           Show help message and exit.
  --debug              Show tracebacks on errors.

Commands:
  complete       print bash completion command
  config         show current configuration or set new configuration
  generate       generate AWS CloudFormation template from python object
  get            download contributed recipe from url
  help           print detailed help for another command

$ aws-vapor config set defaults contrib '/path/to/template-dir'
$ aws-vapor config list
[defaults]
contrib = /path/to/template-dir
$ aws-vapor generate 'template-file' --output '/path/to/json-file'