Re: [web-nfc] add a cancelAll() instead of cancelPush()

We could call it ```cancelPush()``` and ```unwatch()``` without 
further ado. 
But then why not be able to pass an optional parameter if you only 
want to cancel one.
We arrive to the same thing from both ends.

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GitHub Notif of comment by zolkis
See https://github.com/w3c/web-nfc/issues/86#issuecomment-153327112

Received on Tuesday, 3 November 2015 11:40:31 UTC