added amazon-fireos to platforms
added amazon-fireos to platforms

corimf/cordova-mobile-spec,polyvi/xface-mobile-spec,corimf/cordova-mobile-spec,polyvi/xface-mobile-spec,apache/cordova-mobile-spec,ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,ollie314/cordova-mobile-spec,ollie314/cordova-mobile-spec,apache/cordova-mobile-spec,corimf/cordova-mobile-spec,ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,ollie314/cordova-mobile-spec,apache/cordova-mobile-spec,polyvi/xface-mobile-spec,apache/cordova-mobile-spec,apache/cordova-mobile-spec