Simple app which displays a list of shopping districts. When you select a district you can view the images for that district within a page view controller.
- on launch, asynchronously fetches json via http and syncs data to core data db
- for each image in core data db, download thumbnail to the apps cache dir asynchronously, if the file does not exist
- for iPhone a table view and custom table view cell is used
- for iPad a collection view and custom collection view cell is used
- image viewing code adapted from Apple photo scroller sample app