Added the jar file
Created the stub db using dependency injection

To access/use puzzles/users, create a new PuzzleManager or UserManager
object and then do work with that. ie: to add a new User to the db do:

um = new Usermanager()
um.addUser("userName")
Created db

DB intializes fine. Doesn't save puzzles yet (there's a bug with
foreign constraints)

Added a primary key to puzzles
Can save puzzles

can now save puzzles

Fuck DateCreated. We didn't use it anywhere so I got rid of it.
Minor cleanup
Merge pull request #22 from williamhc/database

Database