This commit includes changes to the infrastructure files and a draft of the "Intro" page for the doc plus some skeletal pages for review. It also includes a README.md file with instructions for creating a new page and template files that can be copied to begin a new page. See https://blueprints.launchpad.net/fuel/+spec/config-file-reference for more information. Change-Id: I660ddc28acb4da70e62a5cfe85ec91d0e213c07d