[CONTRIBUTORS] Credits Page Updated

[Eloa]

My opinion anyone? if you dont want it, just skip past this section...

Core team i think is the main developers who worked almost non stop on this thing for weeks. I think I have included those people in that category. I do however think that there should be another category added below core team and above extended team. I think I have got a way around this for everyone to be happier. I'll work on it as soon as I get time.