[sensors] Add prose for on{error|change|statechange}

anssiko has just created a new issue for 
https://github.com/w3c/sensors:

== Add prose for on{error|change|statechange} ==
https://w3c.github.io/sensors/#sensor-onerror
https://w3c.github.io/sensors/#sensor-onchange
https://w3c.github.io/sensors/#sensor-onstatechange

Please view or discuss this issue at 
https://github.com/w3c/sensors/issues/135 using your GitHub account

Received on Tuesday, 20 September 2016 10:22:57 UTC