updated README
removed last update
Merge branch 'experimental'
shorter cheese bonus string
winter zombie stops bullets now
removed vim swap files, corrected bonus string for game over screen
HUD area for powerups, maxed out at 5 with pickup fail sfx
rapid gun pouwerup adjusted for maxed value
prepared powerup jump timer
prepared gfx for more powerups
added gfx and code for 3 new powerups, they do nothing yet
fixed freeze powerup timer reset bug, closes #5
added bullet speed powerup, closes #32
added walking speed powerup, closes #33
added bullet damage powerup, closes #31
added multibullet powerup, closes #30
added GPL3 licenses to all files, closes #6
added configurable spawn zones, closes #61
added some comments for spawning zones
changed author to handle instead of real name