Start defining the MoveSetBuilder language.

I'm doing it by specifying a sample, default moveset to start out with.
"Moves," not "attacks."
Specify minimum EXP for each attack.
Load Moves!
Use the real Move set in Challenger.moveChoices.
Only pick three moves at a time.
Debug Move creation.
Merge pull request #5 from smashwilson/move-loading

Customizable Move definitions