With the help of WaterlooErik at blackberry, I finished up my GUI to make it easy to package up your HTML5 apps and games for upload to the Blackberry Store or for testing on the simulator or BB10 device.
You can download it here (Windows only, sorry)
http://www.arcadeinabox.com/html52bar.zip
Quick video tutorial here:
I create the app for myself, but Erik thought it might be useful to others, so I cleaned it up a bit and here it is.