Update to the latesst spec framework version.
Update to the latesst spec framework version.

justinleoye/ServiceWorker,chadoliver/ServiceWorker,justinleoye/ServiceWorker,zuzusik/ServiceWorker,martinthomson/ServiceWorker,martinthomson/ServiceWorker,slightlyoff/ServiceWorker,chadoliver/ServiceWorker,zuzusik/ServiceWorker,chadoliver/ServiceWorker,zuzusik/ServiceWorker,mkruisselbrink/ServiceWorker,karolklp/ServiceWorker,justinleoye/ServiceWorker,martinthomson/ServiceWorker,karolklp/ServiceWorker,mkruisselbrink/ServiceWorker,karolklp/ServiceWorker,slightlyoff/ServiceWorker