Fixing TraitsGUI simple_scene example to correct the import of SimpleScene, which was removed from the pyface.tvtk.api.
Fixing TraitsGUI simple_scene example to correct the import of SimpleScene, which was removed from the pyface.tvtk.api.

geggo/pyface,pankajp/pyface,geggo/pyface,enthought/traitsgui,brett-patterson/pyface