Written basic parser for MUS via PEGjs http://pegjs.org/
  This version takes in notes in the following format 'a4'[100]
  This version takes in sequences in the following format 'a4'[100] 'b2'[300] 'c3'[600]

Outputs a syntax tree in the format the MUS compiler requires

Need to add functionality for the following:
  1)Rests
  2)Chords
  3)Repeated Sections

Basic Unit Tests Written in musUnitTests.js More to follow.