Add end-user installation and usage docs

README.adoc

@@ -18,15 +18,23 @@ What rund provides:
 * Host-network mode only
 * bind mounts
 
-== Prerequisites
+== Installation and usage
+
+See https://github.com/macOScontainers/homebrew-formula#readme[homebrew-formula] repository for end-user instructions.
+
+== Development
+
+This section describes development setup for hacking on rund code.
+
+=== Prerequisites
 
 * Disable https://developer.apple.com/documentation/security/disabling_and_enabling_system_integrity_protection[System Integrity Protection].
 SIP https://github.com/containerd/containerd/discussions/5525#discussioncomment-2685649[doesn't allow] to `chroot`.
 * Install https://osxfuse.github.io[macFUSE] or https://www.fuse-t.org[fuse-t]
 * Install https://bindfs.org/downloads/[bindfs] using https://github.com/mpartel/bindfs/issues/100#issuecomment-870699085[build instructions]
 
 [[containerd]]
-== Usage with containerd
+=== Usage with containerd
 
 Prerequisite: https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-container-registry#authenticating-to-the-container-registry[authenticate to GitHub Package Registry].
 
@@ -59,7 +67,7 @@ sudo go run cmd/ctr/main.go run --rm -t --runtime "$(pwd)/../rund/bin/containerd
 
 If you want to build image from scratch, see https://github.com/macOScontainers/macos-jail[macos-jail] project.
 
-== Usage with BuildKit
+=== Usage with BuildKit
 
 Perform all the steps from <<containerd>>.
 
@@ -94,7 +102,7 @@ EOF
 sudo go run ./cmd/buildctl build --frontend=dockerfile.v0 --local context=. -local dockerfile=.
 ----
 
-== Usage with Docker
+=== Usage with Docker
 
 Perform all the steps from <<containerd>>.
 You don't need BuildKit daemon to use Docker on macOS.