new HomeButton(container, scene, durationopt)
    A single button widget for returning to the default camera view of the current scene.
    Parameters:
| Name | Type | Attributes | Description | 
|---|---|---|---|
| container | Element | String | The DOM element or ID that will contain the widget. | |
| scene | Scene | The Scene instance to use. | |
| duration | Number | <optional> | The time, in seconds, it takes to complete the camera flight home. | 
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Members
container :Element
    Gets the parent container.
    Type:
- Element
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viewModel :HomeButtonViewModel
    Gets the view model.
    Type:
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Methods
destroy()
    Destroys the widget.  Should be called if permanently
removing the widget from layout.
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isDestroyed() → {Boolean}
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Returns:
    true if the object has been destroyed, false otherwise.
- Type
- Boolean