added simple shim module for AudioContext
added Sample module to load a sample and play it. This module only supports playing only one copy of a Sample once at a time, which works perfect for our use case.
Emits 'ready' when prepared for playback or 'error' if any error occurred.
added first version of a radio-like filter that cuts off frequencies lower than 150Hz and higher than 2000Hz. Furthermore it peaks frees around 600Hz and runs everything through a compressor with a threshold of -20 and a ratio of 4. This all generates a radio like filter without really low bass sounds, high sounds and emphasized mid frets.