Consolidate Crowbar documentation under the Crowbar barclamp

This commit moves all documentation from the crowbar repository
to the barclamp-crowbar repository. Since there are multiple repos
involed, it appears as a delete from crowbar, and new files in
barclamp-crowbar.
Merge pull request #792 from mikeyp-dell/pull-req-master-4575dffa56634296bb7517ba913f55767684f393

https://github.com/crowbar/barclamp-crowbar/pull/792

Merged by devtool for cloudedge