Merge "Add README" am: 0a34762447 am: 61fb2fb909 am: 34ffae94a1 am: 4b4f786934 am: 31a075368a am: 879e681eea

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Dialer/+/2613992

Change-Id: I6b4577b1e18854915ff5e3d74cd97e981b9f0395
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>