WIP ex 10-1
Merge branch 'cinder' of github.com:gregkepler/The-Nature-of-Code-Examples into cinder
Fixed a Trainer initialization bug.
Cleaned up Ex 10-1
Started putting ex 10-2 together.
WIP ex 10-2
Ex 10-2 complete
Started ex 10-3
Example 10-3 completed
Added 10-4