updading quick start guide with Havana information

Updatd links to point to havana builds as well as wording
Changed 'Gluster for Swift' to 'Gluster-Swift'

Change-Id: I60df2c6c1a6bb0dac529ac50f552fa262fb9ff23
Signed-off-by: Thiago da Silva <thiago@redhat.com>
Signed-off-by: Luis Pabon <lpabon@redhat.com>
Reviewed-on: http://review.gluster.org/6297