Tweak copyright in mp3-parser.js heading
Revise module-export and UMD code
Split into lib / id3v2 / xing modules
Remove deprecated version-test
Remove redundant path to .bin/jasmine-node

from package's scripts.test entry
Ignore docs folder
Revise paths in Makefile
Add grock dependency and generate-docs task
Improve documentation and minor housekeeping
Bump minor revision -> v0.2.0