improve docs a bit, because people were not down
improve docs a bit, because people were not down

kruppel/zoom.js,AladdinSonni/zoom.js,nemesiscodex/zoom.js,alisonmonteiro/zoom.js,spinningarrow/zoom-vanilla.js,heavybeard/advanced-zoom,fat/zoom.js,nemesiscodex/zoom.js,AladdinSonni/zoom.js,kingdido999/zoom.js,ja0nz/zoom.js,chenweiyj/zoom.js,fat/zoom.js,ja0nz/zoom.js,chenweiyj/zoom.js,alisonmonteiro/zoom.js,spinningarrow/zoom-vanilla.js,fungxu/zoom.js,asonni/zoom.js,kruppel/zoom.js,kingdido999/zoom.js,fungxu/zoom.js,asonni/zoom.js