[chapter 08 #192] Replace Data Value with Object: add example
[chapter 08 #193] Replace Data Value with Object: create customer class
[chapter 08 #193] Replace Data Value with Object: change method to reference to use customer class
[chapter 08 #193] Replace Data Value with Object: refactored example
[chapter 08 #194] Change Value to Reference: add readme
[chapter 08 #196] Change Value to Reference: add example
[chapter 08 #197] Change Value to Reference: use factory method to create customer
[chapter 08 #197] Change Value to Reference: refactored example
[chapter 08 #198] Change Reference to Value: add readme
[chapter 08 #200] Change Reference to Value: add example
[chapter 08 #200] Change Reference to Value: refactored example
[chapter 08 #201] Replace Array with Object: add readme
[chapter 08 #202] Replace Array with Object: add example
[chapter 08 #203] Replace Array with Object: Create a new class to represent the information in the Array
[chapter 08 #204] Replace Array with Object: refactored example