Enable vibration API
revert API spec to working draft phase
update API support on BB10

Looking at a trust worthy resource on the web by Max Firtman's blog as well as his website suggests so.

http://www.mobilexweb.com/blog/blackberry-10-first-class-html5-mobile-platform

http://mobilehtml5.org/
merge upstream
Merge pull request #469 from jaydeepw/vibration

Update vibration API support for BB10