This patch updates the compose installation instruction to
be more clear about the default instructions installing
the current stable release.
Inline nodes about installing different versions has been
reduced, and the "Master builds" section has been renamed
to "Install pre-release builds", to capture installing either
"master" builds, or pre-releases (release-candidates) from
GitHub.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
f6ed1b7725