change piano page to real piano
Merge branch 'master' of https://github.com/DjComandos/hackby13drafts
fix piano instruments
Merge branch 'master' of https://github.com/DjComandos/hackby13drafts

Conflicts:
	static/scripts/instruments.js
Merge branch 'master' of https://github.com/DjComandos/hackby13drafts