Added an option so you can show money in the scoreboard.
Fixed some bugs with the achievements rewards.

I'll try to soon work on the Shotgun etc. so it can one-shot. I'll explain you the problem, apparently between each projectile hit (EntityDamageByEntityEvent with a projectile) there is a weird delay. So it knows when the first snowball/enderpearl hits the player but if a second hits just after, it doesn't detect. I tried something but didn't work, I'll try to work on it soon.