Update KeyboardControlComponent.java

Changed the description to match the file.
Updated keyboard controller
Merge branch 'master' of https://github.com/UoBGamesDev/TDUV
Update KeyboardControlComponent.java

Changed the description back to WASD... make your mind up guys!! :P
Added PrimitiveMusicPlayer and MusicPlayer classes

PrimitiveMusicPlayer is a basic music player with static methods for
playing, looping and fading music and sound effects. MusicPlayer holds
a collection of tracks and has methods to play, loop, and crossfade
tracks.