@InstanceFactory was set to look for Fields instead of methods

"fix it" to now match the javadoc :P

if it was set like that so modders wouldn't use it, it might be better to just say so in the documentation
Merge pull request #254 from CaptainShadows/patch-1

@InstanceFactory was set to look for Fields instead of methods
Update FML for new stealth update for 1.6.2