rename MapView#removeAllMarkers to MapView#clear

[naderio]

According to docs public final void clear () "Removes all markers, polylines, polygons, overlays, etc from the map." not just markers.

[dapriett]

Changed removeAllMarkers to just remove markers. Added clear method for removing everything.

[ghost]

@dapriett can you show me an example hwo to remove all markers from map?
update: i did it with gMap.clear()

[mvilchesb]

mapView.removeAllMarkers();

Esa función quita todos los marcadores del mapa.