phantomjs-nagios - Nagios check with PhantomJS. Render an complete Webpage headless and test load time with nagios

Icinga performance data
    load_time: load time of complete website in ms
    size: complete size of all downloaded files in byte
    requests: count of files (css,js,html,...)
    dom_elements: count of all DOM elements on the site
    load_time_initial_req: the load time of the first request