HUD Simplification Feature

I wanted the ability to hide/unhide views on tap/drag/zoom in order to simplify the controls used to manipulate my map. 

My main branch is drastically different from your release branch, so I pulled out this specific feature into a develop branch to allow you to pull it in if you wanted.

Simple example functionality: 

     [_mapView addViewsToHideForSimplify:@[<Some Controls or Views>]];