This project was patched together rather quickly for someone that
wanted to be able to have a timer for their PowerPoint slides so
that they could create their own "Ten Quick Questions".
Once the timer is started, every time the timer reaches zero the
next slide is displayed until the last slide has been displayed.
Unfortunately when the timer is running any slide animations will
not be seen. I may look into providing a better solution for this if
the demand is worth it.