title: LibGDX and ScrollPane with multiple widgets
body: <p>Trying to add multiple items to a scrollpane I quickly found that all "addActor" functions are Unsupported. So, I went with adding a table with all the items I wanted (this code misses a image that I still want to add) to make a scrollable credits screen... but this approach (currently) doesn't allow for overflow, rendering the ScrollPane useless. (My text is only shown up to what the screen's height allows, and isn't scrollable).
  What's the way to make a scrollable pane with multiple widgets in LibGDX? (I only care about Android and Win/Lin/Mac platforms at the moment.</p>
  
  <pre><code>    pane = new ScrollPane(null, skin);
      pane.setFillParent(true);
      paneContent = new Table(skin);
      paneContent.setFillParent(true);
      Label temp = new Label("", skin);
      temp.setAlignment(Align.left, Align.center);
      temp.setText( Gdx.files.internal("licenses/credits.txt").readString("UTF-8") );
      paneContent.addActor(temp);
      pane.setWidget(paneContent);
      stage.addActor(pane);
  </code></pre>