Deletes the persistent store file and re-creates a new one.

resetPersistentStore.m

- (void)resetPersistentStore
{
	NSURL *storeURL = [NSURL fileURLWithPath:[[NSString documentsPath] stringByAppendingPathComponent:DatabaseFileName]];

	// Remove persistent store from the coordinator
	NSPersistentStore *store = [_persistentStoreCoordinator persistentStoreForURL:storeURL];
	NSError *error = nil;
	if (![_persistentStoreCoordinator removePersistentStore:store error:&error])
	{
		// handle error
		return;
	}
	
	// Delete database file
	[[DTAsyncFileDeleter sharedInstance] removeItemAtURL:storeURL];
	
	// Create new persistent store
	error = nil;
	[_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType
											 configuration:nil
													   URL:storeURL
												   options:nil
													 error:&error];
	if (error)
	{
		// handle error
	}
}