Implemented Crypto Upgrade

I think that allowing more coins would be great and also increase the chances of members upgrading.
If any currency should be here it is Monero, afterall you get paid credits to mine it here.
I do think PayPal, BitCoin, LiteCoin, Monero and Ethereum should be the options for payments.
However, this decision comes down to Aoki as payments pass to him. So it's what he uses as acceptable options.