Prettier output for 'mina setup'. Also, show a better error message for it.
Prettier output for 'mina setup'. Also, show a better error message for it.

openaustralia/mina,allantatter/mina,openaustralia/mina,cyberwolfru/mina,Zhomart/mina,estum/mina,mfinelli/mina,estum/mina,whhx/mina,whhx/mina,Zhomart/mina,ianks/mina,dcalixto/mina,allantatter/mina,cyberwolfru/mina,mfinelli/mina,scalp42/mina,flowerett/mina,stereodenis/mina,ianks/mina,flowerett/mina,scalp42/mina,dcalixto/mina