Add jquery-pjax detection (#2510)
Add jquery-pjax detection (#2510)

It's a [fairly popular](https://github.com/defunkt/jquery-pjax) library,
used by github.com
WPO-Foundation/Wappalyzer,AliasIO/wappalyzer,WPO-Foundation/Wappalyzer,AliasIO/wappalyzer,WPO-Foundation/Wappalyzer