~The display scrolls~

I used Keys.as from as3-helpers to help move the display around.  It
uses WASD or the arrow keys.  If you scroll too far, you can see the
white background of the swf and no content, so the offset will need to
be restricted eventually.  I think the next step will be to organize the
code into classes, which is essential to being a pro OOP coder, before
adding more content.