Merge pull request #87 from thomasalrin/master

ceph 4 nodes fix
Merge pull request #88 from thomasalrin/master

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

changes to readme
updated go get command
Merge pull request #90 from indykish/master

updated go get command
test
Merge remote-tracking branch 'origin/master'
install megamcommon first