Add Banks.json
In project target build phases add a second copy files phase for Banks.json

I had a lot of trouble with this. Xcode 5 may have a bug.
I used menu Editor / Add Build Phase / Add copy files build phase. At first the option was grayed out. I clicked validate settings, then clicked around in the white space under the build phases tab.
After several tries the menu option became available.
Reference
http://stackoverflow.com/questions/4365479/how-to-add-a-copy-files-build-phase-to-my-target
In main() use NSJSONSerialization to serialize Banks.json to NSArray.
Save serialized sample data in NSArray to Core Data. Fetch and log it.