Merge pull request #86 from indykish/master

update godep to 1.4.beta1 + libgo upgrade
ceph 4 nodes fix
Merge pull request #87 from thomasalrin/master

ceph 4 nodes fix
ceph changes in cobbler script
Merge pull request #88 from thomasalrin/master

ceph changes in cobbler script
Merge pull request #89 from indykish/master

changes to readme