Install-types are a user facing feature, not just for developers. Lets
move the docs on them in to the user guide.
Change-Id: I6ee8f657c270cf90da9c0729494740bb23aa47c5
Our docs are very developer focused. Lets create a separate user guide
to help new users get started.
Change-Id: I8a03920e6d3306dd0405177875ea55ccb4b40fea