Merge pull request #33 from victorleungtw/master

Add stat.js and readme files
refactored audio context setup and added comments
Merge pull request #34 from victorleungtw/master

Add readme and contributions guidelines
updated
Update _PRESS-RELEASE.md
Merge pull request #36 from mcpike/master

refactored audio context setup and added comments
fixed merge conflict
Merge pull request #37 from mcpike/master

fixed merge conflict
update readme