README example poolsize fix.
README example poolsize fix.

mediocregopher/radix.v2,gabrielperezs/radix.improved,bpowers/radix,fzzy/radix,mediocregopher/radix.v3,bpowers/radix,trigrass2/radix,alphagov/radix,ctrlaltdel121/radix,rightscale/radix,beni55/radix