Merge pull request #50 from sli-fox/steph_branch

Steph branch
Removed player high score references, fixed blacky offscreen  wall collision
Merge pull request #51 from sli-fox/ajay_branch3

Removed player high score references, fixed blacky offscreen  wall collision
Changed Tower::canAttack(...) to use circleToCircleIntersection
Added waveSpecs and nextWaveSpecs and fixed towerSpecs
GameState for game over implemented
Added waveSpecs and nextWaveSpecs and fixed towerSpecs
Merge pull request #52 from sli-fox/marky_branch

Marky branch
Added the id check in tower canAttack
Merge branch 'master' of https://github.com/sli-fox/jamms into ajay_branch3
Merge pull request #53 from sli-fox/ajay_branch3

Ajay branch3
Merge branch 'master' of https://github.com/sli-fox/jamms into steph_branch