Update readme contributing section
Update readme contributing section

joshix/caddy,pyed/caddy,tw4452852/caddy,yukimochi/caddy,pyed/caddy,devangels/caddy,tobya/caddy,pyed/caddy,captncraig/caddy,DenBeke/caddy,pyed/caddy,dusty/caddy,cez81/caddy,tobya/caddy,devangels/caddy,captncraig/caddy,cez81/caddy,cez81/caddy,joshix/caddy,yukimochi/caddy,tw4452852/caddy,elcore/caddy,tw4452852/caddy,yukimochi/caddy,tobya/caddy,ollie314/caddy,ollie314/caddy,elcore/caddy,joshix/caddy,elcore/caddy,tw4452852/caddy,dusty/caddy,devangels/caddy,DenBeke/caddy,DenBeke/caddy,ollie314/caddy,ollie314/caddy,DenBeke/caddy,captncraig/caddy,dusty/caddy,tobya/caddy,dusty/caddy