[
  "Usage: ",
  "",
  "$ html-validator <url>",
  "",
  "or",
  "$ html-validator --file=<path-to-file>",
  "or",
  "$ html-validator --data=<data>",
  "",
  "Optional, specify format of returned data",
  "Valid options: json, html, xhtml, xml, gnu and text (default)",
  "",
  "$ html-validator <url> --format=<format>",
  "",
  "Use another validator (requires the same api)",
  "",
  "$ html-validator <url> --validator='http://html5.validator.nu'",
  "",
  "Optional, pass in strings to ignore",
  "",
  "$ html-validator <url> --ignore='Error: Stray end tag “div”.' --ignore='Error: Stray end tag “body”.'",
  "",
  "Get full result from validator use --verbose",
  "",
  "$ html-validator <url> --verbose",
  "",
  "Optional, only get errors use --quiet",
  "",
  "$ html-validator <url> --quiet"
]