Merge pull request #3 from proppy/master

frontend: move to the sails app + polymer
Merge pull request #4 from proppy/master

frontend: add call to go backend to render the mp3
Merge pull request #5 from proppy/master

frontend: add mp3 player
move backend to backend directory
remove static content serving and flags from backend
add stand-alone backend package main
frontend: s/sound/sounds/
s/app/server/