change config from 'simplePush' to fireboxes to be inline with cordova naming and added support for firefoxos only config
change config from 'simplePush' to fireboxes to be inline with cordova naming and added support for firefoxos only config

aerogear/aerogear-cordova-push,matzew/aerogear-pushplugin-cordova,weedoit/aerogear-cordova-push,PaoloMessina/aerogear-cordova-push,aerogear/aerogear-cordova-push,matzew/aerogear-pushplugin-cordova,aerogear/aerogear-cordova-push,weedoit/aerogear-cordova-push,edewit/aerogear-pushplugin-cordova,aerogear/aerogear-cordova-push,PaoloMessina/aerogear-cordova-push,danielpassos/aerogear-cordova-push,danielpassos/aerogear-cordova-push,danielpassos/aerogear-cordova-push,edewit/aerogear-pushplugin-cordova,matzew/aerogear-pushplugin-cordova,danielpassos/aerogear-cordova-push,matzew/aerogear-pushplugin-cordova,weedoit/aerogear-cordova-push,weedoit/aerogear-cordova-push,edewit/aerogear-pushplugin-cordova,PaoloMessina/aerogear-cordova-push,PaoloMessina/aerogear-cordova-push,edewit/aerogear-pushplugin-cordova