Feature request: link to the README in the documentation #650

The user's guide has an installation section, but that doesn't say anything. It mentions that the README file has the relevant information, but there is no link to that README. I would have to know to go to GitHub, and scroll down (or click the file) to view the readme.

A direct link to the README from the documentation , or otherwise a full inclusion of the relevant installation text in the documentation would be nice.