openlayers/ol3 — pull request #953 by elemoine (2013-09-02 12:16:22+00:00)
Title: Make ol.Overlay consistent with ol.control.Control

Instead of constructing an overlay with a `map` option, it would be more consistent with the control api to call `map.addOverlay(overlay)`.

* [ ] add `ol.Map.prototype.addOverlay`
* [ ] add `ol.Map.prototype.removeOverlay`
* [ ] add `ol.Map.prototype.getOverlays`
* [ ] remove `map` from `ol.OverlayOptions`