Moved the widget code inside `#fbopen-widget-results-demo` to avoid duplicating core widget functionality in `main.js` (see https://github.com/18F/fbopen-widget/blob/master/javascripts/main.js#L43-L65 for an example).  Now the widget will render itself in the right place automatically, and we can use the public `init()` method on the `fbopenWidget` variable to update it dynamically.