jspm is a new package manager for JavaScript fornt-ends that comes with a universal module loading system. It integrates nicely with npm by adding a jspm property to the package.json that specifies what the jspm dependencies are. Mine looks like this:
Magnific Popup is a great little jQuery plugin that creates responsive lightbox's for images. I've used a few lightboxes, but this one definitely has the fewest number of issues when moving between desktop and mobile sizes.