Create clusterhq-release package.
Skip GPG key until we have one.
Add a source repository.
Don't depend on zfs-release, since it isn't needed for flocker-cli.
Correctly disable GPG check.

yum defaults to not checking signatures, but fedora enables it by default.
Thus, we need to disable for our repo.
Add some docs.
Typos.
Globs are evil.

We can calculate the exact filename we want to upload, so just do that.
Fix up date.
Merge pull request #1 from ClusterHQ/clusterhq-release

Add clusterhq-release package.

Fixes ClusterHQ/flocker#531.