Language tweaks
Removed (accidental?) URI
Disabled JSHint "asi" flag
Regenerate index.html
Point to in-browser tests hosted on GitHub
Update index.html
"IETF standardised" is misleading

It's an "Internet Draft" on the IETF site, but that does not imply
official support from the IETF.
Version bump (for new README)
Fix #5: "enum" error assumed JSON.stringify()
IE7 hack for Object.isFrozen()/defineProperty()
IE 7/8 support