Drag demo could use its own image.

[dcporter]

Turns out that the demo build procedures encourage building one demo at a time (possibly this is also bad); that will cause the Drag demo's sc_static'd link over to the image demo's image to get out of sync with the published resources. Since the drag demo needs an image, it may as well get its own.

[topherfangio]

I've pushed the latest and this particular bug is fixed, but feel free to add an image if you like. Otherwise, you can close this issue :-)