To use the chrome extension - which offers the same functionality as the bookmarklet but also let's you scrape behind a log-in - make sure you have the most current version of chrome and click below.
After the installation, you will see to the right of the URL bar. The chrome extension functions in the same way as the bookmarklet – simply click it to kimonify any page to create APIs right from your browser.
If you intend to use kimono to get data behind a login, it is required that you allow the chrome extension access to incognito tabs. To enable this, navigate to Chrome > Settings > Extensions and check 'Allow in incognito' under the kimono extension: