player has health, aliens damage player on contact, round does not restart yet
round restarts, player does not respond, bullets fire out of thin air
aliens no longer are wiped from memory on round reset, fail to respawn
aliens fly upwards after crossing x coord boundary, no randomness yet
remove horrible green bars for game floor ceiling
Merge branch 'master' of https://github.com/znagler/flashforward into kill_player
pulling in master
Merge pull request #31 from znagler/kill_player

Kill player