Add recent DDs etc
Reordered upgrade notes
Merge pull request #154 from lzap/rc-upgrade-improv

Reordered upgrade notes
Release 1.4.0-RC2
Update CentOS SCL link
No need to install Puppet before installation any more
'puppetrun' param was renamed, fixed examples
Merge pull request #156 from norcams/fix_puppetrun_param

'puppetrun' param was renamed, fixed examples