Added navigation close on scroll

[MystK]

Navigation should automatically close on scroll.

This was tested working with the latest Microsoft Edge, Firefox, Chrome, and iOS.

[MystK]

It's probably better to add another event listener to be more in line with the current coding style. A disadvantage would be more memory usage. What do you guys think?

[pgarciacamou]

Hi MystK,

I agree on what you are saying, but this would have a direct impact on issue #7, if scrolling closes the nav-bar then it will prevent from traversing lengthly lists.

I can think on 2 ways to fix this:

1. Detecting the origin of the touch when the user started and if it is outside the nav, then close it.
2. When lengthly lists, if the nav-bar is larger than the screen, do not close it when scrolling.