Displaying current song
Use apply inside directive instead of in controller function
Merge branch 'master' of https://github.com/deini/band.js-piano

Conflicts:
	app.js
	styles/main.css
set up for detecting more key press events
Added comments and readme
Added comments about TODO
Merge branch 'master' of https://github.com/deini/band.js-piano

Conflicts:
	app.js
Merge pull request #9 from malucky/master

Minor fixes and added readme and comments