Session03 Task 1 List Lab and Task 2 Rot13

Create session03 folder, List_lab.py, and Rot13.py 
generally 'spot' is called 'ind' or 'index' 
Also, in this case you can simply iterate over fruits1, not fruits1[:], because you are not changing fruits1 in the loop. In fact, you could iterate over fruits4 if you wanted to, because you are not removing anything from the list.