deprecated - https://developers.google.com/webmasters/ajax-crawling/docs/learn-more 2015 statement - https://webmasters.googleblog.com/2015/10/deprecating-our-ajax-crawling-scheme.html
2016 - https://www.seroundtable.com/google-javascript-ajax-crawl-on-off-21639.html
#ajax
origin - http://www.pipiscrew.com/?p=6944 google-our-javascript-ajax-crawl-is-on-off