The release number is no longer needed

Change-Id: I0a2be98d624a37cc32be6ef6fc8d20821b243f76
Instructions for new savanna hadoop image

Change-Id: I9c727e5c492199647f8119dcc38b913cbd007d3c
First pass on multi-host install instructions

Change-Id: Ibfac3f29e99c891c544e76945bcf480ac83e57a8