[+] ability to use player heads in vouchers and give skins
To use this change the voucher item to PLAYER_HEAD
then get some player skin URL from minecraft-heads.com
and put in the voucher section head_ID(its hidden so you need to add in config or use GUI to auto add)
sample:
```
money:
item: PLAYER_HEAD
head_ID: http://textures.minecraft.net/textu...bfb8ca26fac171edbc6b27c637ea101fc1ae1a2fac441
name: '#ff0000☛#ff2a00 #ff5500V#ff7f00o#ffaa00u#ffd400c#ffff00h#aaff00e#55ff00r#00ff00
```