Late Rendering
creation, render, div
Demonstrates how a map can be rendered to an empty container after
construction by calling the render method.
In cases where you need to create a map first and render it to some
container later, call the map constructor without a "div" argument.
In this case, you can provide the options object as the first argument.
To render your map to some container after construction, call the map's
render method with the container id.