added setup notes
added setup notes

oscarguindzberg/multibit-hd,akonring/multibit-hd-modified,oscarguindzberg/multibit-hd,bitcoin-solutions/multibit-hd,bitcoin-solutions/multibit-hd,bitcoin-solutions/multibit-hd,oscarguindzberg/multibit-hd,akonring/multibit-hd-modified,akonring/multibit-hd-modified