Adding assets and manifest.json questions

Hi, I’m new to sage’s assets builder on manifest, by default on gulp it already compiles everything based on the manifest.json. But when I view source for jquery it seems that its getting the jquery version (“wp-includes/js/jquery/jquery.js?ver=1.11.3”) which I see the bower components should be 2.2.3. Is there any steps that I’m lacked on? And if I wanna add on other plugins like gsap, PreloaderJs stuff, what steps should I do besides just bower install them?

As for plugins, if their bower.json file is up to scratch, bower install --save should be sufficient. See kalenjohnson’s reply here.