Merge pull request #36 from jshiraef/master

Arrow/Enemy collision fixed; Items dropped upon enemy death
Merge branch 'master' of https://github.com/computc/adventure
Adding Audio Libraries (jars) and modifying Classpath
Adding background song
Adding simple audio playback code and classpath typo fix.
Merge pull request #37 from fpruitt/master

Feature: Background Audio Playback
Merge branch 'master' of https://github.com/computc/adventure
TitleScreen added; hero kickBack after collision with enemy
Hero kickback fixed; enemies now kickback after melee attack
all of this was implemented within the hero's checkattack()