Writing and revision of CVE documentation for PE 2.7.2
Merge branch 'master' of github.com:puppetlabs/puppet-docs into pe2.7.2
Added documentation for installer upgrade checking and how to disable it in answer file.
Edits and revisions of CVE's based on feedback from Josh C.
Last few edits before deploying 2.7.2 docs.
Merge branch 'master' of github.com:puppetlabs/puppet-docs into pe2.7.2
Fixing a typo.