Merge pull request #391 from Hobbsee/master

Update debian name, version as per Debian Packaging Policy, fix a couple of typos along the way
Exclude directories owned by the filesystem package from the rpm specfile.
Merge pull request #392 from opscode/yzl/rhel-7

Exclude directories owned by the filesystem package from rpm specfile
Replace "generate" command with "new" in docs

Obvious fix.
Merge pull request #393 from danieldreier/generator_to_new_docs_fix

Replace "generate" command with "new" in docs
Re-add code from omnibus 3 to retry failed downloads