Added PFQueryTableViewController

Trying out the PFQueryTableViewController so that don’t have to track
index paths for the ListingsTableViewController. The
PFQueryTableViewController automatically pulls PFObjects when loading.
Also, the PFQueryTableViewController comes out-of-the-box with several
helpful funcs including the Pull-To-Refresh, Pagination, etc.
capabilities. There is also a PFTableViewCell as part of the Parse
tools and a PFImageView that automatically pulls the PFFile as part of
the PFImageView.file property. You can then do
PFImageView.loadInBackground to get the images to appear.

There is also a new archive that was built a couple days ago for the
latest Test Flight Beta distribution.