updated readme to reflect new Tome.destroy functionality.
updated readme to reflect new Tome.destroy functionality.

bjornstar/tomes,Wizcorp/node-tomes,npmcomponent/Wizcorp-node-tomes,Wizcorp/node-tomes,ronkorving/node-tomes,npmcomponent/Wizcorp-node-tomes,bjornstar/tomes,ronkorving/node-tomes