[Main View] import delegate to MainTableViewController and load data (p.264-265)

1. override method 'initWithName:bundle:' (p.264)
2. override method 'viewWillAppear:' (p.265)
[Main View] display the tableList from Core Data (p.263, 266-269)

1. remove titleList and tableList in MainTableViewController
2. display table list by 'appDelegate.tableList' (Core Data)
3. change section number to 1, and header to 'Beverage'
[Main View][feature] implement delete row from table list (p.270-273)

1. override method 'tableView:commitEditingStyle:forRowAtIndexPath:'

2. delete the row 3 times
   * core data
   * memory
   * UI
[Edit View][UI] add text field 'title', 'detail', and button 'done' (p.276)

connect UI components to EditViewController by 'IBOutlet' and 'IBAction'
[Edit View] support App Delegate in EditViewController (p.279)
[Edit View] display current beverage title and detail in ModifyViewController (p.277-287, 280-281)