Mozilla specifies[1] a function called "mozSetMessageHandler" while we named this function "setMessageHandler" in our polyfill [2] . This is the handler for incoming push notifications.

I'm not really a big fan of specific prefixes but again if we want to be really polyfill here, we should align.

wdyt ? 

Seb

[1] https://developer.mozilla.org/en-US/docs/Web/API/Navigator.mozSetMessageHandler

[2] https://github.com/aerogear/aerogear-js/blob/master/src/simplepush/aerogear.simplepush.js#L152