updating workbench demo notebook
updating workbench demo notebook


Former-commit-id: 2e98baa8b4ec78a4bf6ea599912539a1b3529d58
djtotten/workbench,SuperCowPowers/workbench,djtotten/workbench,djtotten/workbench,SuperCowPowers/workbench,SuperCowPowers/workbench