Update waypointInterface.js (#14)
Update waypointInterface.js (#14)

In iOS 11's Intersection observer's callback entries, there are no "x" nor "y" properties, this commit uses "top" and "left" as fallback.
scaccogatto/vue-waypoint,scaccogatto/vue-waypoint,scaccogatto/vue-waypoint,scaccogatto/vue-waypoint