Use 3rd party JS libraries (including JQuery), call Javascript functions, access object properties and methods. Implement game objects, and algorithms in Javasc...
I'm not quite sure I get what you mean by "use with". Babylon.js is a framework, right? My plugin helps you include js-files in your game, call js-functions and accsess js-objects from these files. If babylon.js has functions and objects you're gonna access, then yes.