Adds a command for changing book generation, and updates README #5

src/main/resources/config.yml

@@ -5,7 +5,7 @@ Options:
   Max_Number_of_Duplicates: 5
   # The separator used to separate the book title and the book author 
   Title-Author_Separator: ","
-  # The separator used to denote a new line in the book lore
+  # The separator used to denote a new line in the book/item lore
   Lore_line_separator: "~"
   # A list of books given to new players the first time they join the server
   Books_for_new_players: [ ]