Fixes #17:  removes reference to Puppet Labs downloads

The previous version of this file included an indirect reference to the Puppet Labs Razor-Microkernel project (indirectly, via the link that was provided to the Puppet Labs download site for those that want to obtain "Razor images"). This commit removes that (outdated) reference and replaces it with details on where to obtain a Hanlon-Microkernel image for use with Hanlon and a brief overview of the types of Microkernel images that are available, which provides Hanlon users with a description of the differences between them.

I've also removed the references to this being a 0.x release and to the fact that because of that breaking changes are allowed. With this version of Hanlon, that is no longer the case.

Finally, there are also a few other differences in this commit that are simply white-space differences. These differences were introduced by edits that I made to shorten up exceedingly long lines that still existed in this file (making it difficult to view in plain-text form).