Update shadowdom.json

Is implemented in FF 29 aurora
https://bugzilla.mozilla.org/show_bug.cgi?id=887538
Added High Resolution Time API
Fixed a syntax error
Shadow DOM became un prefixed in Chrome 35

According to chromestatus (http://www.chromestatus.com/features/4507242028072960) Shadow DOM will be turned on by default and will be unprefixed (but currently in Canary it seems to require --enable-experimental-web-platform-features --js-flags=--harmony).

Tracking issue: https://code.google.com/p/chromium/issues/detail?id=336121
data update
Merge pull request #457 from tamersaadeh/patch-1

Shadow DOM became un prefixed in Chrome 35
Merge pull request #456 from AurelioDeRosa/patch-2

Added High Resolution Time API
Merge pull request #455 from auipga/patch-1

Update shadowdom.json
data update
Delete duplicate file

There is already a web-speech.json file in the repository, so this is a duplicate.
Add spec url, demo url and tutorial url
add feature support in IE. Not supprted for any version of IE
add feature support in Firefox. Refer to browser compatility section here https://developer.mozilla.org/en-US/docs/WebAPI/Battery_Status
add feature support in rest of the browser. The feature is not supported in any other browser than Firefox
update percentage usage to 0.00 as I am not able to determine it at this time. Test passed
Add testing section to help contributors like me
Update testing section
data update
Merge pull request #458 from AurelioDeRosa/patch-2

Delete duplicated file
Merge pull request #460 from jaydeepw/master

Add Battery-Status API feature data