Runs an accessibility audit against a URL

  Usage
    $ a11y <url>

  Options
    --viewport-size=<size>  Set the viewport size
    --delay                 Set the delay capturing the page
    --verbose               Display more information

  Examples
    $ a11y todomvc.com
    $ a11y http://todomvc.com https://google.com
    $ a11y index.html -=viewport-size=1024x768

const a11y = require('a11y');

a11y('nmotw.in', (err, reports) => {
    const audit = reports.audit; // `a11y` Formatted report
    const report = reports.report; // DevTools Accessibility Audit formatted report
});