bower/lib/templates/json/help-prune.json

The browser package manager

{
    "command": "prune",
    "description": "Uninstalls local extraneous packages.",
    "usage": [
        "prune [<options>]"
    ],
    "options": [
        {
            "shorthand":   "-h",
            "flag":        "--help",
            "description": "Show this help message"
        }
    ]
}