[chapter 06 #110] Inline Temp: add example before refactor
[chapter 06 #110] Inline Temp: refactored
[chapter 06 #111] Replace Temp with Query: add readme
[chapter 06 #112] Replace Temp with Query: add example
[chapter 06 #112] Replace Temp with Query: extract the right-hand side of the assignment
[chapter 06 #112] Replace Temp with Query: replace references, then remove temp
[chapter 06 #112] Replace Temp with Query: refactored example