Update README and pyproject.toml. am: 4576977c62 am: 9bd380eee9 am: c9e313175c am: 835ecf36b6 am: cf7ff3232e

Original change: https://android-review.googlesource.com/c/platform/tools/rr_prebuilt/+/2768236

Change-Id: Icd599eca54a242ab1a21d76cd42344afefc2bed7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>