{
    "project_name": "project_name",
    "repo_name": "{{ cookiecutter.project_name|replace(' ', '_') }}",
    "author_name": "Your name (or your organization/company/team)",
    "description": "A short description of the project.",
    "s3_bucket": "your-bucket-for-syncing-data (do not include 's3://')",
    "year": "2016",
    "open_source_license": ["MIT", "BSD", "Not open source"]
}

{
    "project_name": "project_name",
    "repo_name": "{{ cookiecutter.project_name|replace(' ', '_') }}",
    "author_name": "Your name (or your organization/company/team)",
    "description": "A short description of the project.",
    "year": "2016",
    "open_source_license": ["MIT", "BSD", "Not open source"],
    "s3_bucket": "[OPTIONAL] your-bucket-for-syncing-data (do not include 's3://')",
}

Change order, mark s3 bucket as optional
Change order, mark s3 bucket as optional
