Updated to match semver and release notes.

Before this update the Modulefile was not following semver in
relation to stable/havana, and the README files were not in sync.
This update introduces proper semver and consistency.

Change-Id: I1c66f6f811ea23f64589eec338209593d253708c
Merge "Updated to match semver and release notes."
Merge git://github.com/puppetlabs/puppetlabs-glance