Merge pull request #22 from lee-leonardo/master

This should bring it up to speed.
Added pubCount instance variable. Updates on stepperValueChanged
Merge pull request #23 from collinatherton/master

Added pubCount instance variable. Updates on stepperValueChanged
Hotfix for images not appearing
Merge pull request #24 from gaylejj/master

Hotfix for images not appearing
Stuff prior to dispatch queues.
Implemented the basics for the background thread dispatch queues. The rest I'll deal with later.