hacked around auto-increment primary key, so added note to README to come back to maybe fix this

README

@@ -25,8 +25,6 @@ python3 main.py
 
 
 ### TODO: 
-	- need to save a book
-		- not sure about series/loan/subbook, etc.
 	- need to create all classes (green + button)
 	- need to delete all classes (and watch for referential integrity)
 	- need to add 1 author to book, book to sub_book, series
@@ -42,3 +40,5 @@ python3 main.py
 ### MAYBE:
 	when moving a book in a series (which is part of 2 series), do we pop-up
 	offer to move parent/child series orders as well to match (think Thomas Covenant)
+
+	try to "export" db from sqlalchemy to see what it is doing with sequences / primary key for owned table and maybe "new_id" not needed?