removed more slick code
use libGDX Vectors in favor of lwjgl vectors
showing fps in title
removed Slick libraries in build.gradle
removed folders lib and dll for Slick2d
implemented better saving of scores

previously absolute file paths were needed, now using libGDX Preferences
cleanup
comments
noe game doesn't crash when starting with no saved score
game now quittable from start menu
uncommented debug key
Merge branch 'release/v0.1'