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

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

Change-Id: Ic3f28d99cfc92cc5f3f6c73aadd8c5d2b4ca490f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>