JSONKit w/ NSBundle file

json_bundle.m

NSString* jsonPath = [[NSBundle mainBundle] pathForResource:@"arr_fb" ofType:@"json"];
NSData* jsonData = [NSData dataWithContentsOfFile:jsonPath];
JSONDecoder* decoder = [[JSONDecoder alloc] initWithParseOptions:JKParseOptionNone];
NSDictionary* json = [decoder objectWithData:jsonData];
NSArray* shape = [json objectForKey:@"shape"];
NSUInteger fbn_ = [[shape objectAtIndex:0] intValue];